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Finding the Fourth Proportional to 518,291.16, 715,266.24 and 303,500.40

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Solution

The fourth proportional to 518,291.16, 715,266.24 and 303,500.40 is: 418,844.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,291.16 : 715,266.24 = 303,500.40 : x
  2. Step 2: Convert to fraction form
    518,291.16/715,266.24 = 303,500.40/x
  3. Step 3: Cross multiply
    518,291.16x = 715,266.24 × 303,500.40
  4. Step 4: Simplify right side
    518,291.16x = 217,083,589,946.50
  5. Step 5: Solve for x
    x = 217,083,589,946.50/518,291.16
  6. Step 6: Final answer
    x = 418,844.86

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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.