Home / 316,105.20-473,495.40-147,769.20

Finding the Fourth Proportional to 316,105.20, 473,495.40 and 147,769.20

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Solution

The fourth proportional to 316,105.20, 473,495.40 and 147,769.20 is: 221,344.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,105.20 : 473,495.40 = 147,769.20 : x
  2. Step 2: Convert to fraction form
    316,105.20/473,495.40 = 147,769.20/x
  3. Step 3: Cross multiply
    316,105.20x = 473,495.40 × 147,769.20
  4. Step 4: Simplify right side
    316,105.20x = 69,968,036,461.68
  5. Step 5: Solve for x
    x = 69,968,036,461.68/316,105.20
  6. Step 6: Final answer
    x = 221,344.15

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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.