Home / 315,491.28-435,376.02-172,251.33

Finding the Fourth Proportional to 315,491.28, 435,376.02 and 172,251.33

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Solution

The fourth proportional to 315,491.28, 435,376.02 and 172,251.33 is: 237,705.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,491.28 : 435,376.02 = 172,251.33 : x
  2. Step 2: Convert to fraction form
    315,491.28/435,376.02 = 172,251.33/x
  3. Step 3: Cross multiply
    315,491.28x = 435,376.02 × 172,251.33
  4. Step 4: Simplify right side
    315,491.28x = 74,994,098,495.11
  5. Step 5: Solve for x
    x = 74,994,098,495.11/315,491.28
  6. Step 6: Final answer
    x = 237,705.77

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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.