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Finding the Fourth Proportional to 354,644.10, 531,966.15 and 144,432.90

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Solution

The fourth proportional to 354,644.10, 531,966.15 and 144,432.90 is: 216,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,644.10 : 531,966.15 = 144,432.90 : x
  2. Step 2: Convert to fraction form
    354,644.10/531,966.15 = 144,432.90/x
  3. Step 3: Cross multiply
    354,644.10x = 531,966.15 × 144,432.90
  4. Step 4: Simplify right side
    354,644.10x = 76,833,413,746.34
  5. Step 5: Solve for x
    x = 76,833,413,746.34/354,644.10
  6. Step 6: Final answer
    x = 216,649.35

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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.