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Finding the Fourth Proportional to 288,709.30, 432,219.48 and 168,398.38

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Solution

The fourth proportional to 288,709.30, 432,219.48 and 168,398.38 is: 252,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,709.30 : 432,219.48 = 168,398.38 : x
  2. Step 2: Convert to fraction form
    288,709.30/432,219.48 = 168,398.38/x
  3. Step 3: Cross multiply
    288,709.30x = 432,219.48 × 168,398.38
  4. Step 4: Simplify right side
    288,709.30x = 72,785,060,236.44
  5. Step 5: Solve for x
    x = 72,785,060,236.44/288,709.30
  6. Step 6: Final answer
    x = 252,105.01

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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.