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Finding the Fourth Proportional to 245,593.81, 368,390.72 and 87,812.70

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Solution

The fourth proportional to 245,593.81, 368,390.72 and 87,812.70 is: 131,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,593.81 : 368,390.72 = 87,812.70 : x
  2. Step 2: Convert to fraction form
    245,593.81/368,390.72 = 87,812.70/x
  3. Step 3: Cross multiply
    245,593.81x = 368,390.72 × 87,812.70
  4. Step 4: Simplify right side
    245,593.81x = 32,349,382,122.26
  5. Step 5: Solve for x
    x = 32,349,382,122.26/245,593.81
  6. Step 6: Final answer
    x = 131,719.04

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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.