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Finding the Fourth Proportional to 175,335.20, 263,002.80 and 172,419.20

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Solution

The fourth proportional to 175,335.20, 263,002.80 and 172,419.20 is: 258,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,335.20 : 263,002.80 = 172,419.20 : x
  2. Step 2: Convert to fraction form
    175,335.20/263,002.80 = 172,419.20/x
  3. Step 3: Cross multiply
    175,335.20x = 263,002.80 × 172,419.20
  4. Step 4: Simplify right side
    175,335.20x = 45,346,732,373.76
  5. Step 5: Solve for x
    x = 45,346,732,373.76/175,335.20
  6. Step 6: Final answer
    x = 258,628.80

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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.