Home / 499,129.80-688,799.50-272,775.32

Finding the Fourth Proportional to 499,129.80, 688,799.50 and 272,775.32

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Solution

The fourth proportional to 499,129.80, 688,799.50 and 272,775.32 is: 376,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,129.80 : 688,799.50 = 272,775.32 : x
  2. Step 2: Convert to fraction form
    499,129.80/688,799.50 = 272,775.32/x
  3. Step 3: Cross multiply
    499,129.80x = 688,799.50 × 272,775.32
  4. Step 4: Simplify right side
    499,129.80x = 187,887,504,028.34
  5. Step 5: Solve for x
    x = 187,887,504,028.34/499,129.80
  6. Step 6: Final answer
    x = 376,430.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.