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Finding the Fourth Proportional to 515,452.16, 711,323.76 and 300,550.72

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Solution

The fourth proportional to 515,452.16, 711,323.76 and 300,550.72 is: 414,759.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,452.16 : 711,323.76 = 300,550.72 : x
  2. Step 2: Convert to fraction form
    515,452.16/711,323.76 = 300,550.72/x
  3. Step 3: Cross multiply
    515,452.16x = 711,323.76 × 300,550.72
  4. Step 4: Simplify right side
    515,452.16x = 213,788,868,221.11
  5. Step 5: Solve for x
    x = 213,788,868,221.11/515,452.16
  6. Step 6: Final answer
    x = 414,759.86

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1.5x scale

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.