Home / 318,819.20-439,970.56-175,578.88

Finding the Fourth Proportional to 318,819.20, 439,970.56 and 175,578.88

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Solution

The fourth proportional to 318,819.20, 439,970.56 and 175,578.88 is: 242,298.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,819.20 : 439,970.56 = 175,578.88 : x
  2. Step 2: Convert to fraction form
    318,819.20/439,970.56 = 175,578.88/x
  3. Step 3: Cross multiply
    318,819.20x = 439,970.56 × 175,578.88
  4. Step 4: Simplify right side
    318,819.20x = 77,249,538,157.77
  5. Step 5: Solve for x
    x = 77,249,538,157.77/318,819.20
  6. Step 6: Final answer
    x = 242,298.89

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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.