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Finding the Fourth Proportional to 402,348.56, 555,238.80 and 218,585.60

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Solution

The fourth proportional to 402,348.56, 555,238.80 and 218,585.60 is: 301,646.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,348.56 : 555,238.80 = 218,585.60 : x
  2. Step 2: Convert to fraction form
    402,348.56/555,238.80 = 218,585.60/x
  3. Step 3: Cross multiply
    402,348.56x = 555,238.80 × 218,585.60
  4. Step 4: Simplify right side
    402,348.56x = 121,367,206,241.28
  5. Step 5: Solve for x
    x = 121,367,206,241.28/402,348.56
  6. Step 6: Final answer
    x = 301,646.93

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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.