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Finding the Fourth Proportional to 394,298.69, 542,410.43 and 345,681.68

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Solution

The fourth proportional to 394,298.69, 542,410.43 and 345,681.68 is: 475,531.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,298.69 : 542,410.43 = 345,681.68 : x
  2. Step 2: Convert to fraction form
    394,298.69/542,410.43 = 345,681.68/x
  3. Step 3: Cross multiply
    394,298.69x = 542,410.43 × 345,681.68
  4. Step 4: Simplify right side
    394,298.69x = 187,501,344,251.46
  5. Step 5: Solve for x
    x = 187,501,344,251.46/394,298.69
  6. Step 6: Final answer
    x = 475,531.24

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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.