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Finding the Fourth Proportional to 371,410.26, 513,026.95 and 307,139.11

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Solution

The fourth proportional to 371,410.26, 513,026.95 and 307,139.11 is: 424,249.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,410.26 : 513,026.95 = 307,139.11 : x
  2. Step 2: Convert to fraction form
    371,410.26/513,026.95 = 307,139.11/x
  3. Step 3: Cross multiply
    371,410.26x = 513,026.95 × 307,139.11
  4. Step 4: Simplify right side
    371,410.26x = 157,570,639,354.49
  5. Step 5: Solve for x
    x = 157,570,639,354.49/371,410.26
  6. Step 6: Final answer
    x = 424,249.56

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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.