Home / 426,849.28-640,273.84-146,368.96

Finding the Fourth Proportional to 426,849.28, 640,273.84 and 146,368.96

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Solution

The fourth proportional to 426,849.28, 640,273.84 and 146,368.96 is: 219,553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,849.28 : 640,273.84 = 146,368.96 : x
  2. Step 2: Convert to fraction form
    426,849.28/640,273.84 = 146,368.96/x
  3. Step 3: Cross multiply
    426,849.28x = 640,273.84 × 146,368.96
  4. Step 4: Simplify right side
    426,849.28x = 93,716,216,076.01
  5. Step 5: Solve for x
    x = 93,716,216,076.01/426,849.28
  6. Step 6: Final answer
    x = 219,553.41

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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.