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Finding the Fourth Proportional to 401,031, 553,422.90 and 239,892.84

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Solution

The fourth proportional to 401,031, 553,422.90 and 239,892.84 is: 331,052.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,031 : 553,422.90 = 239,892.84 : x
  2. Step 2: Convert to fraction form
    401,031/553,422.90 = 239,892.84/x
  3. Step 3: Cross multiply
    401,031x = 553,422.90 × 239,892.84
  4. Step 4: Simplify right side
    401,031x = 132,762,191,202.04
  5. Step 5: Solve for x
    x = 132,762,191,202.04/401,031
  6. Step 6: Final answer
    x = 331,052.19

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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.