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Finding the Fourth Proportional to 280,131.88, 386,454.88 and 165,332.64

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Solution

The fourth proportional to 280,131.88, 386,454.88 and 165,332.64 is: 228,084.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,131.88 : 386,454.88 = 165,332.64 : x
  2. Step 2: Convert to fraction form
    280,131.88/386,454.88 = 165,332.64/x
  3. Step 3: Cross multiply
    280,131.88x = 386,454.88 × 165,332.64
  4. Step 4: Simplify right side
    280,131.88x = 63,893,605,551.28
  5. Step 5: Solve for x
    x = 63,893,605,551.28/280,131.88
  6. Step 6: Final answer
    x = 228,084.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.