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Finding the Fourth Proportional to 213,376.72, 320,104.76 and 88,727.76

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Solution

The fourth proportional to 213,376.72, 320,104.76 and 88,727.76 is: 133,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,376.72 : 320,104.76 = 88,727.76 : x
  2. Step 2: Convert to fraction form
    213,376.72/320,104.76 = 88,727.76/x
  3. Step 3: Cross multiply
    213,376.72x = 320,104.76 × 88,727.76
  4. Step 4: Simplify right side
    213,376.72x = 28,402,178,320.14
  5. Step 5: Solve for x
    x = 28,402,178,320.14/213,376.72
  6. Step 6: Final answer
    x = 133,108.14

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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.