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Finding the Fourth Proportional to 315,929.60, 473,126.40 and 167,859.20

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Solution

The fourth proportional to 315,929.60, 473,126.40 and 167,859.20 is: 251,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,929.60 : 473,126.40 = 167,859.20 : x
  2. Step 2: Convert to fraction form
    315,929.60/473,126.40 = 167,859.20/x
  3. Step 3: Cross multiply
    315,929.60x = 473,126.40 × 167,859.20
  4. Step 4: Simplify right side
    315,929.60x = 79,418,619,002.88
  5. Step 5: Solve for x
    x = 79,418,619,002.88/315,929.60
  6. Step 6: Final answer
    x = 251,380.75

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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.