Home / 426,569.20-639,361.64-160,159.78

Finding the Fourth Proportional to 426,569.20, 639,361.64 and 160,159.78

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Solution

The fourth proportional to 426,569.20, 639,361.64 and 160,159.78 is: 240,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,569.20 : 639,361.64 = 160,159.78 : x
  2. Step 2: Convert to fraction form
    426,569.20/639,361.64 = 160,159.78/x
  3. Step 3: Cross multiply
    426,569.20x = 639,361.64 × 160,159.78
  4. Step 4: Simplify right side
    426,569.20x = 102,400,019,602.84
  5. Step 5: Solve for x
    x = 102,400,019,602.84/426,569.20
  6. Step 6: Final answer
    x = 240,054.88

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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.