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Finding the Fourth Proportional to 216,665.63, 325,111.78 and 88,676.92

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Solution

The fourth proportional to 216,665.63, 325,111.78 and 88,676.92 is: 133,061.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,665.63 : 325,111.78 = 88,676.92 : x
  2. Step 2: Convert to fraction form
    216,665.63/325,111.78 = 88,676.92/x
  3. Step 3: Cross multiply
    216,665.63x = 325,111.78 × 88,676.92
  4. Step 4: Simplify right side
    216,665.63x = 28,829,911,306.12
  5. Step 5: Solve for x
    x = 28,829,911,306.12/216,665.63
  6. Step 6: Final answer
    x = 133,061.77

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1.5x scale

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.