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Finding the Fourth Proportional to 439,770.40, 659,590.80 and 124,259.20

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Solution

The fourth proportional to 439,770.40, 659,590.80 and 124,259.20 is: 186,370.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,770.40 : 659,590.80 = 124,259.20 : x
  2. Step 2: Convert to fraction form
    439,770.40/659,590.80 = 124,259.20/x
  3. Step 3: Cross multiply
    439,770.40x = 659,590.80 × 124,259.20
  4. Step 4: Simplify right side
    439,770.40x = 81,960,225,135.36
  5. Step 5: Solve for x
    x = 81,960,225,135.36/439,770.40
  6. Step 6: Final answer
    x = 186,370.49

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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.