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Finding the Fourth Proportional to 216,856.76, 325,035.66 and 83,678.18

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Solution

The fourth proportional to 216,856.76, 325,035.66 and 83,678.18 is: 125,421.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,856.76 : 325,035.66 = 83,678.18 : x
  2. Step 2: Convert to fraction form
    216,856.76/325,035.66 = 83,678.18/x
  3. Step 3: Cross multiply
    216,856.76x = 325,035.66 × 83,678.18
  4. Step 4: Simplify right side
    216,856.76x = 27,198,392,463.90
  5. Step 5: Solve for x
    x = 27,198,392,463.90/216,856.76
  6. Step 6: Final answer
    x = 125,421.00

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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.