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Finding the Fourth Proportional to 316,445.05, 474,593.74 and 91,745.18

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Solution

The fourth proportional to 316,445.05, 474,593.74 and 91,745.18 is: 137,596.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,445.05 : 474,593.74 = 91,745.18 : x
  2. Step 2: Convert to fraction form
    316,445.05/474,593.74 = 91,745.18/x
  3. Step 3: Cross multiply
    316,445.05x = 474,593.74 × 91,745.18
  4. Step 4: Simplify right side
    316,445.05x = 43,541,688,103.17
  5. Step 5: Solve for x
    x = 43,541,688,103.17/316,445.05
  6. Step 6: Final answer
    x = 137,596.36

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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.