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Finding the Fourth Proportional to 248,007.80, 371,982.90 and 70,542.20

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Solution

The fourth proportional to 248,007.80, 371,982.90 and 70,542.20 is: 105,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,007.80 : 371,982.90 = 70,542.20 : x
  2. Step 2: Convert to fraction form
    248,007.80/371,982.90 = 70,542.20/x
  3. Step 3: Cross multiply
    248,007.80x = 371,982.90 × 70,542.20
  4. Step 4: Simplify right side
    248,007.80x = 26,240,492,128.38
  5. Step 5: Solve for x
    x = 26,240,492,128.38/248,007.80
  6. Step 6: Final answer
    x = 105,805.11

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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.