Home / 312,052.28-430,631.76-168,812

Finding the Fourth Proportional to 312,052.28, 430,631.76 and 168,812

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Solution

The fourth proportional to 312,052.28, 430,631.76 and 168,812 is: 232,960.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,052.28 : 430,631.76 = 168,812 : x
  2. Step 2: Convert to fraction form
    312,052.28/430,631.76 = 168,812/x
  3. Step 3: Cross multiply
    312,052.28x = 430,631.76 × 168,812
  4. Step 4: Simplify right side
    312,052.28x = 72,695,808,669.12
  5. Step 5: Solve for x
    x = 72,695,808,669.12/312,052.28
  6. Step 6: Final answer
    x = 232,960.35

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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.