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Finding the Fourth Proportional to 307,089.57, 423,874.86 and 193,987.65

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Solution

The fourth proportional to 307,089.57, 423,874.86 and 193,987.65 is: 267,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,089.57 : 423,874.86 = 193,987.65 : x
  2. Step 2: Convert to fraction form
    307,089.57/423,874.86 = 193,987.65/x
  3. Step 3: Cross multiply
    307,089.57x = 423,874.86 × 193,987.65
  4. Step 4: Simplify right side
    307,089.57x = 82,226,487,985.48
  5. Step 5: Solve for x
    x = 82,226,487,985.48/307,089.57
  6. Step 6: Final answer
    x = 267,760.60

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1.5x scale

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.