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Finding the Fourth Proportional to 385,425.34, 578,150.70 and 132,703.18

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Solution

The fourth proportional to 385,425.34, 578,150.70 and 132,703.18 is: 199,059.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,425.34 : 578,150.70 = 132,703.18 : x
  2. Step 2: Convert to fraction form
    385,425.34/578,150.70 = 132,703.18/x
  3. Step 3: Cross multiply
    385,425.34x = 578,150.70 × 132,703.18
  4. Step 4: Simplify right side
    385,425.34x = 76,722,436,409.23
  5. Step 5: Solve for x
    x = 76,722,436,409.23/385,425.34
  6. Step 6: Final answer
    x = 199,059.14

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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.