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Finding the Fourth Proportional to 660,468.30, 990,390.15 and 255,850.01

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Solution

The fourth proportional to 660,468.30, 990,390.15 and 255,850.01 is: 383,654.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,468.30 : 990,390.15 = 255,850.01 : x
  2. Step 2: Convert to fraction form
    660,468.30/990,390.15 = 255,850.01/x
  3. Step 3: Cross multiply
    660,468.30x = 990,390.15 × 255,850.01
  4. Step 4: Simplify right side
    660,468.30x = 253,391,328,543.41
  5. Step 5: Solve for x
    x = 253,391,328,543.41/660,468.30
  6. Step 6: Final answer
    x = 383,654.04

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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.