Home / 498,139.20-747,208.80-143,132.40

Finding the Fourth Proportional to 498,139.20, 747,208.80 and 143,132.40

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Solution

The fourth proportional to 498,139.20, 747,208.80 and 143,132.40 is: 214,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,139.20 : 747,208.80 = 143,132.40 : x
  2. Step 2: Convert to fraction form
    498,139.20/747,208.80 = 143,132.40/x
  3. Step 3: Cross multiply
    498,139.20x = 747,208.80 × 143,132.40
  4. Step 4: Simplify right side
    498,139.20x = 106,949,788,845.12
  5. Step 5: Solve for x
    x = 106,949,788,845.12/498,139.20
  6. Step 6: Final answer
    x = 214,698.60

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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.