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Finding the Fourth Proportional to 279,225.61, 418,700.04 and 99,284.04

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Solution

The fourth proportional to 279,225.61, 418,700.04 and 99,284.04 is: 148,876.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,225.61 : 418,700.04 = 99,284.04 : x
  2. Step 2: Convert to fraction form
    279,225.61/418,700.04 = 99,284.04/x
  3. Step 3: Cross multiply
    279,225.61x = 418,700.04 × 99,284.04
  4. Step 4: Simplify right side
    279,225.61x = 41,570,232,566.11
  5. Step 5: Solve for x
    x = 41,570,232,566.11/279,225.61
  6. Step 6: Final answer
    x = 148,876.86

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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.