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Finding the Fourth Proportional to 439,390.80, 606,373.56 and 243,159.48

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Solution

The fourth proportional to 439,390.80, 606,373.56 and 243,159.48 is: 335,567.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,390.80 : 606,373.56 = 243,159.48 : x
  2. Step 2: Convert to fraction form
    439,390.80/606,373.56 = 243,159.48/x
  3. Step 3: Cross multiply
    439,390.80x = 606,373.56 × 243,159.48
  4. Step 4: Simplify right side
    439,390.80x = 147,445,479,535.35
  5. Step 5: Solve for x
    x = 147,445,479,535.35/439,390.80
  6. Step 6: Final answer
    x = 335,567.97

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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.