Home / 454,412.20-681,650.70-138,868.60

Finding the Fourth Proportional to 454,412.20, 681,650.70 and 138,868.60

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Solution

The fourth proportional to 454,412.20, 681,650.70 and 138,868.60 is: 208,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,412.20 : 681,650.70 = 138,868.60 : x
  2. Step 2: Convert to fraction form
    454,412.20/681,650.70 = 138,868.60/x
  3. Step 3: Cross multiply
    454,412.20x = 681,650.70 × 138,868.60
  4. Step 4: Simplify right side
    454,412.20x = 94,659,878,398.02
  5. Step 5: Solve for x
    x = 94,659,878,398.02/454,412.20
  6. Step 6: Final answer
    x = 208,312.80

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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.