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Finding the Fourth Proportional to 307,484.40, 424,167.12 and 250,187.70

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Solution

The fourth proportional to 307,484.40, 424,167.12 and 250,187.70 is: 345,127.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,484.40 : 424,167.12 = 250,187.70 : x
  2. Step 2: Convert to fraction form
    307,484.40/424,167.12 = 250,187.70/x
  3. Step 3: Cross multiply
    307,484.40x = 424,167.12 × 250,187.70
  4. Step 4: Simplify right side
    307,484.40x = 106,121,396,168.42
  5. Step 5: Solve for x
    x = 106,121,396,168.42/307,484.40
  6. Step 6: Final answer
    x = 345,127.74

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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.