Home / 426,959.28-639,883.31-173,943.45

Finding the Fourth Proportional to 426,959.28, 639,883.31 and 173,943.45

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Solution

The fourth proportional to 426,959.28, 639,883.31 and 173,943.45 is: 260,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,959.28 : 639,883.31 = 173,943.45 : x
  2. Step 2: Convert to fraction form
    426,959.28/639,883.31 = 173,943.45/x
  3. Step 3: Cross multiply
    426,959.28x = 639,883.31 × 173,943.45
  4. Step 4: Simplify right side
    426,959.28x = 111,303,509,669.10
  5. Step 5: Solve for x
    x = 111,303,509,669.10/426,959.28
  6. Step 6: Final answer
    x = 260,688.82

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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.