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Finding the Fourth Proportional to 415,903.98, 573,683.21 and 272,673.20

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Solution

The fourth proportional to 415,903.98, 573,683.21 and 272,673.20 is: 376,115.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,903.98 : 573,683.21 = 272,673.20 : x
  2. Step 2: Convert to fraction form
    415,903.98/573,683.21 = 272,673.20/x
  3. Step 3: Cross multiply
    415,903.98x = 573,683.21 × 272,673.20
  4. Step 4: Simplify right side
    415,903.98x = 156,428,037,750.34
  5. Step 5: Solve for x
    x = 156,428,037,750.34/415,903.98
  6. Step 6: Final answer
    x = 376,115.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.