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Finding the Fourth Proportional to 518,270.91, 714,969.50 and 303,279.09

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Solution

The fourth proportional to 518,270.91, 714,969.50 and 303,279.09 is: 418,382.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,270.91 : 714,969.50 = 303,279.09 : x
  2. Step 2: Convert to fraction form
    518,270.91/714,969.50 = 303,279.09/x
  3. Step 3: Cross multiply
    518,270.91x = 714,969.50 × 303,279.09
  4. Step 4: Simplify right side
    518,270.91x = 216,835,297,821.36
  5. Step 5: Solve for x
    x = 216,835,297,821.36/518,270.91
  6. Step 6: Final answer
    x = 418,382.15

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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.