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Finding the Fourth Proportional to 247,783.60, 371,689.50 and 70,276.57

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Solution

The fourth proportional to 247,783.60, 371,689.50 and 70,276.57 is: 105,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,783.60 : 371,689.50 = 70,276.57 : x
  2. Step 2: Convert to fraction form
    247,783.60/371,689.50 = 70,276.57/x
  3. Step 3: Cross multiply
    247,783.60x = 371,689.50 × 70,276.57
  4. Step 4: Simplify right side
    247,783.60x = 26,121,063,165.02
  5. Step 5: Solve for x
    x = 26,121,063,165.02/247,783.60
  6. Step 6: Final answer
    x = 105,418.85

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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.