Home / 439,747.20-659,620.80-140,225.40

Finding the Fourth Proportional to 439,747.20, 659,620.80 and 140,225.40

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Solution

The fourth proportional to 439,747.20, 659,620.80 and 140,225.40 is: 210,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,747.20 : 659,620.80 = 140,225.40 : x
  2. Step 2: Convert to fraction form
    439,747.20/659,620.80 = 140,225.40/x
  3. Step 3: Cross multiply
    439,747.20x = 659,620.80 × 140,225.40
  4. Step 4: Simplify right side
    439,747.20x = 92,495,590,528.32
  5. Step 5: Solve for x
    x = 92,495,590,528.32/439,747.20
  6. Step 6: Final answer
    x = 210,338.10

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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.