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Finding the Fourth Proportional to 439,422.80, 659,095.80 and 143,934.80

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Solution

The fourth proportional to 439,422.80, 659,095.80 and 143,934.80 is: 215,889.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,422.80 : 659,095.80 = 143,934.80 : x
  2. Step 2: Convert to fraction form
    439,422.80/659,095.80 = 143,934.80/x
  3. Step 3: Cross multiply
    439,422.80x = 659,095.80 × 143,934.80
  4. Step 4: Simplify right side
    439,422.80x = 94,866,822,153.84
  5. Step 5: Solve for x
    x = 94,866,822,153.84/439,422.80
  6. Step 6: Final answer
    x = 215,889.62

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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.