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Finding the Fourth Proportional to 355,486.68, 532,876.86 and 145,275.48

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Solution

The fourth proportional to 355,486.68, 532,876.86 and 145,275.48 is: 217,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,486.68 : 532,876.86 = 145,275.48 : x
  2. Step 2: Convert to fraction form
    355,486.68/532,876.86 = 145,275.48/x
  3. Step 3: Cross multiply
    355,486.68x = 532,876.86 × 145,275.48
  4. Step 4: Simplify right side
    355,486.68x = 77,413,941,617.39
  5. Step 5: Solve for x
    x = 77,413,941,617.39/355,486.68
  6. Step 6: Final answer
    x = 217,768.90

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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.