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Finding the Fourth Proportional to 362,415.80, 543,278.10 and 282,409.40

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Solution

The fourth proportional to 362,415.80, 543,278.10 and 282,409.40 is: 423,344.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,415.80 : 543,278.10 = 282,409.40 : x
  2. Step 2: Convert to fraction form
    362,415.80/543,278.10 = 282,409.40/x
  3. Step 3: Cross multiply
    362,415.80x = 543,278.10 × 282,409.40
  4. Step 4: Simplify right side
    362,415.80x = 153,426,842,254.14
  5. Step 5: Solve for x
    x = 153,426,842,254.14/362,415.80
  6. Step 6: Final answer
    x = 423,344.79

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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.