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Finding the Fourth Proportional to 288,672.68, 398,386.98 and 161,353.64

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Solution

The fourth proportional to 288,672.68, 398,386.98 and 161,353.64 is: 222,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,672.68 : 398,386.98 = 161,353.64 : x
  2. Step 2: Convert to fraction form
    288,672.68/398,386.98 = 161,353.64/x
  3. Step 3: Cross multiply
    288,672.68x = 398,386.98 × 161,353.64
  4. Step 4: Simplify right side
    288,672.68x = 64,281,189,351.61
  5. Step 5: Solve for x
    x = 64,281,189,351.61/288,672.68
  6. Step 6: Final answer
    x = 222,678.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.