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Finding the Fourth Proportional to 243,149.77, 335,545.85 and 135,718.87

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Solution

The fourth proportional to 243,149.77, 335,545.85 and 135,718.87 is: 187,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,149.77 : 335,545.85 = 135,718.87 : x
  2. Step 2: Convert to fraction form
    243,149.77/335,545.85 = 135,718.87/x
  3. Step 3: Cross multiply
    243,149.77x = 335,545.85 × 135,718.87
  4. Step 4: Simplify right side
    243,149.77x = 45,539,903,595.19
  5. Step 5: Solve for x
    x = 45,539,903,595.19/243,149.77
  6. Step 6: Final answer
    x = 187,291.58

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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.