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Finding the Fourth Proportional to 518,288.24, 714,993.28 and 303,295.20

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Solution

The fourth proportional to 518,288.24, 714,993.28 and 303,295.20 is: 418,404.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,288.24 : 714,993.28 = 303,295.20 : x
  2. Step 2: Convert to fraction form
    518,288.24/714,993.28 = 303,295.20/x
  3. Step 3: Cross multiply
    518,288.24x = 714,993.28 × 303,295.20
  4. Step 4: Simplify right side
    518,288.24x = 216,854,029,856.26
  5. Step 5: Solve for x
    x = 216,854,029,856.26/518,288.24
  6. Step 6: Final answer
    x = 418,404.30

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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.