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Finding the Fourth Proportional to 372,123.99, 513,521.91 and 217,104.98

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Solution

The fourth proportional to 372,123.99, 513,521.91 and 217,104.98 is: 299,599.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,123.99 : 513,521.91 = 217,104.98 : x
  2. Step 2: Convert to fraction form
    372,123.99/513,521.91 = 217,104.98/x
  3. Step 3: Cross multiply
    372,123.99x = 513,521.91 × 217,104.98
  4. Step 4: Simplify right side
    372,123.99x = 111,488,161,432.50
  5. Step 5: Solve for x
    x = 111,488,161,432.50/372,123.99
  6. Step 6: Final answer
    x = 299,599.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.