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Finding the Fourth Proportional to 278,061.72, 383,671.70 and 176,015.40

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Solution

The fourth proportional to 278,061.72, 383,671.70 and 176,015.40 is: 242,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,061.72 : 383,671.70 = 176,015.40 : x
  2. Step 2: Convert to fraction form
    278,061.72/383,671.70 = 176,015.40/x
  3. Step 3: Cross multiply
    278,061.72x = 383,671.70 × 176,015.40
  4. Step 4: Simplify right side
    278,061.72x = 67,532,127,744.18
  5. Step 5: Solve for x
    x = 67,532,127,744.18/278,061.72
  6. Step 6: Final answer
    x = 242,867.40

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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.