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Finding the Fourth Proportional to 540,021.90, 810,032.85 and 240,645.90

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Solution

The fourth proportional to 540,021.90, 810,032.85 and 240,645.90 is: 360,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,021.90 : 810,032.85 = 240,645.90 : x
  2. Step 2: Convert to fraction form
    540,021.90/810,032.85 = 240,645.90/x
  3. Step 3: Cross multiply
    540,021.90x = 810,032.85 × 240,645.90
  4. Step 4: Simplify right side
    540,021.90x = 194,931,084,217.82
  5. Step 5: Solve for x
    x = 194,931,084,217.82/540,021.90
  6. Step 6: Final answer
    x = 360,968.85

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.