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Finding the Fourth Proportional to 363,383.16, 545,111.04 and 138,932.40

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Solution

The fourth proportional to 363,383.16, 545,111.04 and 138,932.40 is: 208,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,383.16 : 545,111.04 = 138,932.40 : x
  2. Step 2: Convert to fraction form
    363,383.16/545,111.04 = 138,932.40/x
  3. Step 3: Cross multiply
    363,383.16x = 545,111.04 × 138,932.40
  4. Step 4: Simplify right side
    363,383.16x = 75,733,585,053.70
  5. Step 5: Solve for x
    x = 75,733,585,053.70/363,383.16
  6. Step 6: Final answer
    x = 208,412.48

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1.5x scale

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.