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Finding the Fourth Proportional to 256,951.64, 354,358.95 and 220,641.68

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Solution

The fourth proportional to 256,951.64, 354,358.95 and 220,641.68 is: 304,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,951.64 : 354,358.95 = 220,641.68 : x
  2. Step 2: Convert to fraction form
    256,951.64/354,358.95 = 220,641.68/x
  3. Step 3: Cross multiply
    256,951.64x = 354,358.95 × 220,641.68
  4. Step 4: Simplify right side
    256,951.64x = 78,186,352,279.24
  5. Step 5: Solve for x
    x = 78,186,352,279.24/256,951.64
  6. Step 6: Final answer
    x = 304,284.32

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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.