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Finding the Fourth Proportional to 278,095.88, 383,770.00 and 157,260.89

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Solution

The fourth proportional to 278,095.88, 383,770.00 and 157,260.89 is: 217,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,095.88 : 383,770.00 = 157,260.89 : x
  2. Step 2: Convert to fraction form
    278,095.88/383,770.00 = 157,260.89/x
  3. Step 3: Cross multiply
    278,095.88x = 383,770.00 × 157,260.89
  4. Step 4: Simplify right side
    278,095.88x = 60,352,012,911.30
  5. Step 5: Solve for x
    x = 60,352,012,911.30/278,095.88
  6. Step 6: Final answer
    x = 217,018.72

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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.