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Finding the Fourth Proportional to 216,870.29, 299,245.29 and 136,240.71

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Solution

The fourth proportional to 216,870.29, 299,245.29 and 136,240.71 is: 187,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,870.29 : 299,245.29 = 136,240.71 : x
  2. Step 2: Convert to fraction form
    216,870.29/299,245.29 = 136,240.71/x
  3. Step 3: Cross multiply
    216,870.29x = 299,245.29 × 136,240.71
  4. Step 4: Simplify right side
    216,870.29x = 40,769,390,773.76
  5. Step 5: Solve for x
    x = 40,769,390,773.76/216,870.29
  6. Step 6: Final answer
    x = 187,989.75

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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.