Home / 510,128.20-765,221.10-155,153.80

Finding the Fourth Proportional to 510,128.20, 765,221.10 and 155,153.80

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Solution

The fourth proportional to 510,128.20, 765,221.10 and 155,153.80 is: 232,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,128.20 : 765,221.10 = 155,153.80 : x
  2. Step 2: Convert to fraction form
    510,128.20/765,221.10 = 155,153.80/x
  3. Step 3: Cross multiply
    510,128.20x = 765,221.10 × 155,153.80
  4. Step 4: Simplify right side
    510,128.20x = 118,726,961,505.18
  5. Step 5: Solve for x
    x = 118,726,961,505.18/510,128.20
  6. Step 6: Final answer
    x = 232,739.46

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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.