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Finding the Fourth Proportional to 215,359.76, 323,085.79 and 65,612.12

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Solution

The fourth proportional to 215,359.76, 323,085.79 and 65,612.12 is: 98,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,359.76 : 323,085.79 = 65,612.12 : x
  2. Step 2: Convert to fraction form
    215,359.76/323,085.79 = 65,612.12/x
  3. Step 3: Cross multiply
    215,359.76x = 323,085.79 × 65,612.12
  4. Step 4: Simplify right side
    215,359.76x = 21,198,343,623.77
  5. Step 5: Solve for x
    x = 21,198,343,623.77/215,359.76
  6. Step 6: Final answer
    x = 98,432.24

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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.