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Finding the Fourth Proportional to 579,715.76, 869,472.12 and 153,255.62

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Solution

The fourth proportional to 579,715.76, 869,472.12 and 153,255.62 is: 229,856.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,715.76 : 869,472.12 = 153,255.62 : x
  2. Step 2: Convert to fraction form
    579,715.76/869,472.12 = 153,255.62/x
  3. Step 3: Cross multiply
    579,715.76x = 869,472.12 × 153,255.62
  4. Step 4: Simplify right side
    579,715.76x = 133,251,488,823.31
  5. Step 5: Solve for x
    x = 133,251,488,823.31/579,715.76
  6. Step 6: Final answer
    x = 229,856.59

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1.5x scale

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.