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Finding the Fourth Proportional to 279,246.61, 418,731.54 and 99,305.04

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Solution

The fourth proportional to 279,246.61, 418,731.54 and 99,305.04 is: 148,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,246.61 : 418,731.54 = 99,305.04 : x
  2. Step 2: Convert to fraction form
    279,246.61/418,731.54 = 99,305.04/x
  3. Step 3: Cross multiply
    279,246.61x = 418,731.54 × 99,305.04
  4. Step 4: Simplify right side
    279,246.61x = 41,582,152,328.96
  5. Step 5: Solve for x
    x = 41,582,152,328.96/279,246.61
  6. Step 6: Final answer
    x = 148,908.35

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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.