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Finding the Fourth Proportional to 660,210.71, 990,383.18 and 227,871.90

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Solution

The fourth proportional to 660,210.71, 990,383.18 and 227,871.90 is: 341,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,210.71 : 990,383.18 = 227,871.90 : x
  2. Step 2: Convert to fraction form
    660,210.71/990,383.18 = 227,871.90/x
  3. Step 3: Cross multiply
    660,210.71x = 990,383.18 × 227,871.90
  4. Step 4: Simplify right side
    660,210.71x = 225,680,495,815.28
  5. Step 5: Solve for x
    x = 225,680,495,815.28/660,210.71
  6. Step 6: Final answer
    x = 341,831.02

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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.