Home / 439,731.20-659,596.80-140,209.40

Finding the Fourth Proportional to 439,731.20, 659,596.80 and 140,209.40

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Solution

The fourth proportional to 439,731.20, 659,596.80 and 140,209.40 is: 210,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,731.20 : 659,596.80 = 140,209.40 : x
  2. Step 2: Convert to fraction form
    439,731.20/659,596.80 = 140,209.40/x
  3. Step 3: Cross multiply
    439,731.20x = 659,596.80 × 140,209.40
  4. Step 4: Simplify right side
    439,731.20x = 92,481,671,569.92
  5. Step 5: Solve for x
    x = 92,481,671,569.92/439,731.20
  6. Step 6: Final answer
    x = 210,314.10

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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.