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Finding the Fourth Proportional to 540,165.69, 810,248.90 and 140,805.45

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Solution

The fourth proportional to 540,165.69, 810,248.90 and 140,805.45 is: 211,208.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,165.69 : 810,248.90 = 140,805.45 : x
  2. Step 2: Convert to fraction form
    540,165.69/810,248.90 = 140,805.45/x
  3. Step 3: Cross multiply
    540,165.69x = 810,248.90 × 140,805.45
  4. Step 4: Simplify right side
    540,165.69x = 114,087,460,272.48
  5. Step 5: Solve for x
    x = 114,087,460,272.48/540,165.69
  6. Step 6: Final answer
    x = 211,208.27

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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.