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Finding the Fourth Proportional to 207,036.20, 309,898.20 and 147,987.20

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Solution

The fourth proportional to 207,036.20, 309,898.20 and 147,987.20 is: 221,511.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,036.20 : 309,898.20 = 147,987.20 : x
  2. Step 2: Convert to fraction form
    207,036.20/309,898.20 = 147,987.20/x
  3. Step 3: Cross multiply
    207,036.20x = 309,898.20 × 147,987.20
  4. Step 4: Simplify right side
    207,036.20x = 45,860,966,903.04
  5. Step 5: Solve for x
    x = 45,860,966,903.04/207,036.20
  6. Step 6: Final answer
    x = 221,511.83

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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.