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Finding the Fourth Proportional to 518,276.22, 714,976.72 and 303,283.18

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Solution

The fourth proportional to 518,276.22, 714,976.72 and 303,283.18 is: 418,387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,276.22 : 714,976.72 = 303,283.18 : x
  2. Step 2: Convert to fraction form
    518,276.22/714,976.72 = 303,283.18/x
  3. Step 3: Cross multiply
    518,276.22x = 714,976.72 × 303,283.18
  4. Step 4: Simplify right side
    518,276.22x = 216,840,413,267.57
  5. Step 5: Solve for x
    x = 216,840,413,267.57/518,276.22
  6. Step 6: Final answer
    x = 418,387.73

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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.