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Finding the Fourth Proportional to 280,562.64, 386,360.94 and 243,751.83

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Solution

The fourth proportional to 280,562.64, 386,360.94 and 243,751.83 is: 335,669.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,562.64 : 386,360.94 = 243,751.83 : x
  2. Step 2: Convert to fraction form
    280,562.64/386,360.94 = 243,751.83/x
  3. Step 3: Cross multiply
    280,562.64x = 386,360.94 × 243,751.83
  4. Step 4: Simplify right side
    280,562.64x = 94,176,186,165.52
  5. Step 5: Solve for x
    x = 94,176,186,165.52/280,562.64
  6. Step 6: Final answer
    x = 335,669.02

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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.