Home / 385,411.38-577,722.33-132,615.78

Finding the Fourth Proportional to 385,411.38, 577,722.33 and 132,615.78

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Solution

The fourth proportional to 385,411.38, 577,722.33 and 132,615.78 is: 198,787.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,411.38 : 577,722.33 = 132,615.78 : x
  2. Step 2: Convert to fraction form
    385,411.38/577,722.33 = 132,615.78/x
  3. Step 3: Cross multiply
    385,411.38x = 577,722.33 × 132,615.78
  4. Step 4: Simplify right side
    385,411.38x = 76,615,097,416.37
  5. Step 5: Solve for x
    x = 76,615,097,416.37/385,411.38
  6. Step 6: Final answer
    x = 198,787.84

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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.