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Finding the Fourth Proportional to 358,489.30, 537,731.54 and 145,254.06

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Solution

The fourth proportional to 358,489.30, 537,731.54 and 145,254.06 is: 217,880.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,489.30 : 537,731.54 = 145,254.06 : x
  2. Step 2: Convert to fraction form
    358,489.30/537,731.54 = 145,254.06/x
  3. Step 3: Cross multiply
    358,489.30x = 537,731.54 × 145,254.06
  4. Step 4: Simplify right side
    358,489.30x = 78,107,689,375.05
  5. Step 5: Solve for x
    x = 78,107,689,375.05/358,489.30
  6. Step 6: Final answer
    x = 217,880.12

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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.