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Finding the Fourth Proportional to 631,215.60, 871,083.11 and 359,301

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Solution

The fourth proportional to 631,215.60, 871,083.11 and 359,301 is: 495,838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,215.60 : 871,083.11 = 359,301 : x
  2. Step 2: Convert to fraction form
    631,215.60/871,083.11 = 359,301/x
  3. Step 3: Cross multiply
    631,215.60x = 871,083.11 × 359,301
  4. Step 4: Simplify right side
    631,215.60x = 312,981,030,709.61
  5. Step 5: Solve for x
    x = 312,981,030,709.61/631,215.60
  6. Step 6: Final answer
    x = 495,838.55

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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.