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Finding the Fourth Proportional to 439,384.80, 659,077.20 and 158,911.20

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Solution

The fourth proportional to 439,384.80, 659,077.20 and 158,911.20 is: 238,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,384.80 : 659,077.20 = 158,911.20 : x
  2. Step 2: Convert to fraction form
    439,384.80/659,077.20 = 158,911.20/x
  3. Step 3: Cross multiply
    439,384.80x = 659,077.20 × 158,911.20
  4. Step 4: Simplify right side
    439,384.80x = 104,734,748,744.64
  5. Step 5: Solve for x
    x = 104,734,748,744.64/439,384.80
  6. Step 6: Final answer
    x = 238,366.80

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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.