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Finding the Fourth Proportional to 362,403.70, 543,605.55 and 220,686.10

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Solution

The fourth proportional to 362,403.70, 543,605.55 and 220,686.10 is: 331,029.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,403.70 : 543,605.55 = 220,686.10 : x
  2. Step 2: Convert to fraction form
    362,403.70/543,605.55 = 220,686.10/x
  3. Step 3: Cross multiply
    362,403.70x = 543,605.55 × 220,686.10
  4. Step 4: Simplify right side
    362,403.70x = 119,966,188,767.86
  5. Step 5: Solve for x
    x = 119,966,188,767.86/362,403.70
  6. Step 6: Final answer
    x = 331,029.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.