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Finding the Fourth Proportional to 288,777.79, 398,353.36 and 167,905.72

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Solution

The fourth proportional to 288,777.79, 398,353.36 and 167,905.72 is: 231,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,777.79 : 398,353.36 = 167,905.72 : x
  2. Step 2: Convert to fraction form
    288,777.79/398,353.36 = 167,905.72/x
  3. Step 3: Cross multiply
    288,777.79x = 398,353.36 × 167,905.72
  4. Step 4: Simplify right side
    288,777.79x = 66,885,807,725.22
  5. Step 5: Solve for x
    x = 66,885,807,725.22/288,777.79
  6. Step 6: Final answer
    x = 231,616.87

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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.