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Finding the Fourth Proportional to 228,061.65, 314,715.78 and 126,080.62

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Solution

The fourth proportional to 228,061.65, 314,715.78 and 126,080.62 is: 173,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,061.65 : 314,715.78 = 126,080.62 : x
  2. Step 2: Convert to fraction form
    228,061.65/314,715.78 = 126,080.62/x
  3. Step 3: Cross multiply
    228,061.65x = 314,715.78 × 126,080.62
  4. Step 4: Simplify right side
    228,061.65x = 39,679,560,666.18
  5. Step 5: Solve for x
    x = 39,679,560,666.18/228,061.65
  6. Step 6: Final answer
    x = 173,986.12

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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.