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Finding the Fourth Proportional to 355,053.72, 532,585.14 and 198,279.48

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Solution

The fourth proportional to 355,053.72, 532,585.14 and 198,279.48 is: 297,421.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,053.72 : 532,585.14 = 198,279.48 : x
  2. Step 2: Convert to fraction form
    355,053.72/532,585.14 = 198,279.48/x
  3. Step 3: Cross multiply
    355,053.72x = 532,585.14 × 198,279.48
  4. Step 4: Simplify right side
    355,053.72x = 105,600,704,614.93
  5. Step 5: Solve for x
    x = 105,600,704,614.93/355,053.72
  6. Step 6: Final answer
    x = 297,421.77

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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.