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Finding the Fourth Proportional to 288,549.12, 432,687.46 and 168,640.47

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Solution

The fourth proportional to 288,549.12, 432,687.46 and 168,640.47 is: 252,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,549.12 : 432,687.46 = 168,640.47 : x
  2. Step 2: Convert to fraction form
    288,549.12/432,687.46 = 168,640.47/x
  3. Step 3: Cross multiply
    288,549.12x = 432,687.46 × 168,640.47
  4. Step 4: Simplify right side
    288,549.12x = 72,968,615,774.30
  5. Step 5: Solve for x
    x = 72,968,615,774.30/288,549.12
  6. Step 6: Final answer
    x = 252,881.09

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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.