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Finding the Fourth Proportional to 439,909.20, 659,426.40 and 202,838.40

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Solution

The fourth proportional to 439,909.20, 659,426.40 and 202,838.40 is: 304,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,909.20 : 659,426.40 = 202,838.40 : x
  2. Step 2: Convert to fraction form
    439,909.20/659,426.40 = 202,838.40/x
  3. Step 3: Cross multiply
    439,909.20x = 659,426.40 × 202,838.40
  4. Step 4: Simplify right side
    439,909.20x = 133,756,995,893.76
  5. Step 5: Solve for x
    x = 133,756,995,893.76/439,909.20
  6. Step 6: Final answer
    x = 304,055.92

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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.