Home / 394,875.28-592,312.44-128,635.36

Finding the Fourth Proportional to 394,875.28, 592,312.44 and 128,635.36

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Solution

The fourth proportional to 394,875.28, 592,312.44 and 128,635.36 is: 192,952.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,875.28 : 592,312.44 = 128,635.36 : x
  2. Step 2: Convert to fraction form
    394,875.28/592,312.44 = 128,635.36/x
  3. Step 3: Cross multiply
    394,875.28x = 592,312.44 × 128,635.36
  4. Step 4: Simplify right side
    394,875.28x = 76,192,323,951.88
  5. Step 5: Solve for x
    x = 76,192,323,951.88/394,875.28
  6. Step 6: Final answer
    x = 192,952.88

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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.