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Finding the Fourth Proportional to 354,510.34, 531,516.40 and 129,841.58

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Solution

The fourth proportional to 354,510.34, 531,516.40 and 129,841.58 is: 194,671.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,510.34 : 531,516.40 = 129,841.58 : x
  2. Step 2: Convert to fraction form
    354,510.34/531,516.40 = 129,841.58/x
  3. Step 3: Cross multiply
    354,510.34x = 531,516.40 × 129,841.58
  4. Step 4: Simplify right side
    354,510.34x = 69,012,930,176.10
  5. Step 5: Solve for x
    x = 69,012,930,176.10/354,510.34
  6. Step 6: Final answer
    x = 194,671.14

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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.