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Finding the Fourth Proportional to 509,007.30, 763,510.12 and 129,927.98

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Solution

The fourth proportional to 509,007.30, 763,510.12 and 129,927.98 is: 194,891.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,007.30 : 763,510.12 = 129,927.98 : x
  2. Step 2: Convert to fraction form
    509,007.30/763,510.12 = 129,927.98/x
  3. Step 3: Cross multiply
    509,007.30x = 763,510.12 × 129,927.98
  4. Step 4: Simplify right side
    509,007.30x = 99,201,327,601.16
  5. Step 5: Solve for x
    x = 99,201,327,601.16/509,007.30
  6. Step 6: Final answer
    x = 194,891.76

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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.