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Finding the Fourth Proportional to 358,640.68, 538,031.82 and 105,925.48

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Solution

The fourth proportional to 358,640.68, 538,031.82 and 105,925.48 is: 158,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,640.68 : 538,031.82 = 105,925.48 : x
  2. Step 2: Convert to fraction form
    358,640.68/538,031.82 = 105,925.48/x
  3. Step 3: Cross multiply
    358,640.68x = 538,031.82 × 105,925.48
  4. Step 4: Simplify right side
    358,640.68x = 56,991,278,788.77
  5. Step 5: Solve for x
    x = 56,991,278,788.77/358,640.68
  6. Step 6: Final answer
    x = 158,909.13

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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.