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Finding the Fourth Proportional to 342,332.12, 513,619.80 and 152,775.20

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Solution

The fourth proportional to 342,332.12, 513,619.80 and 152,775.20 is: 229,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,332.12 : 513,619.80 = 152,775.20 : x
  2. Step 2: Convert to fraction form
    342,332.12/513,619.80 = 152,775.20/x
  3. Step 3: Cross multiply
    342,332.12x = 513,619.80 × 152,775.20
  4. Step 4: Simplify right side
    342,332.12x = 78,468,367,668.96
  5. Step 5: Solve for x
    x = 78,468,367,668.96/342,332.12
  6. Step 6: Final answer
    x = 229,217.08

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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.