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Finding the Fourth Proportional to 247,987, 342,221.25 and 134,808.94

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Solution

The fourth proportional to 247,987, 342,221.25 and 134,808.94 is: 186,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,987 : 342,221.25 = 134,808.94 : x
  2. Step 2: Convert to fraction form
    247,987/342,221.25 = 134,808.94/x
  3. Step 3: Cross multiply
    247,987x = 342,221.25 × 134,808.94
  4. Step 4: Simplify right side
    247,987x = 46,134,483,957.98
  5. Step 5: Solve for x
    x = 46,134,483,957.98/247,987
  6. Step 6: Final answer
    x = 186,035.90

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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.