Home / 399,748.83-599,663.57-129,865.74

Finding the Fourth Proportional to 399,748.83, 599,663.57 and 129,865.74

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Solution

The fourth proportional to 399,748.83, 599,663.57 and 129,865.74 is: 194,811.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,748.83 : 599,663.57 = 129,865.74 : x
  2. Step 2: Convert to fraction form
    399,748.83/599,663.57 = 129,865.74/x
  3. Step 3: Cross multiply
    399,748.83x = 599,663.57 × 129,865.74
  4. Step 4: Simplify right side
    399,748.83x = 77,875,752,619.76
  5. Step 5: Solve for x
    x = 77,875,752,619.76/399,748.83
  6. Step 6: Final answer
    x = 194,811.71

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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.