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Finding the Fourth Proportional to 207,051.20, 309,920.70 and 148,002.20

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Solution

The fourth proportional to 207,051.20, 309,920.70 and 148,002.20 is: 221,534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,051.20 : 309,920.70 = 148,002.20 : x
  2. Step 2: Convert to fraction form
    207,051.20/309,920.70 = 148,002.20/x
  3. Step 3: Cross multiply
    207,051.20x = 309,920.70 × 148,002.20
  4. Step 4: Simplify right side
    207,051.20x = 45,868,945,425.54
  5. Step 5: Solve for x
    x = 45,868,945,425.54/207,051.20
  6. Step 6: Final answer
    x = 221,534.31

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1.5x scale

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.