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Finding the Fourth Proportional to 253,966.14, 381,006.62 and 127,666.90

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Solution

The fourth proportional to 253,966.14, 381,006.62 and 127,666.90 is: 191,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,966.14 : 381,006.62 = 127,666.90 : x
  2. Step 2: Convert to fraction form
    253,966.14/381,006.62 = 127,666.90/x
  3. Step 3: Cross multiply
    253,966.14x = 381,006.62 × 127,666.90
  4. Step 4: Simplify right side
    253,966.14x = 48,641,934,054.88
  5. Step 5: Solve for x
    x = 48,641,934,054.88/253,966.14
  6. Step 6: Final answer
    x = 191,529.21

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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.