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Finding the Fourth Proportional to 235,479.20, 353,215.76 and 57,987.77

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Solution

The fourth proportional to 235,479.20, 353,215.76 and 57,987.77 is: 86,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,479.20 : 353,215.76 = 57,987.77 : x
  2. Step 2: Convert to fraction form
    235,479.20/353,215.76 = 57,987.77/x
  3. Step 3: Cross multiply
    235,479.20x = 353,215.76 × 57,987.77
  4. Step 4: Simplify right side
    235,479.20x = 20,482,192,195.24
  5. Step 5: Solve for x
    x = 20,482,192,195.24/235,479.20
  6. Step 6: Final answer
    x = 86,980.90

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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.