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Finding the Fourth Proportional to 648,351.20, 972,235.20 and 248,859.20

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Solution

The fourth proportional to 648,351.20, 972,235.20 and 248,859.20 is: 373,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,351.20 : 972,235.20 = 248,859.20 : x
  2. Step 2: Convert to fraction form
    648,351.20/972,235.20 = 248,859.20/x
  3. Step 3: Cross multiply
    648,351.20x = 972,235.20 × 248,859.20
  4. Step 4: Simplify right side
    648,351.20x = 241,949,674,083.84
  5. Step 5: Solve for x
    x = 241,949,674,083.84/648,351.20
  6. Step 6: Final answer
    x = 373,176.87

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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.