Home / 278,061.20-383,705.16-157,208.40

Finding the Fourth Proportional to 278,061.20, 383,705.16 and 157,208.40

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Solution

The fourth proportional to 278,061.20, 383,705.16 and 157,208.40 is: 216,936.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,061.20 : 383,705.16 = 157,208.40 : x
  2. Step 2: Convert to fraction form
    278,061.20/383,705.16 = 157,208.40/x
  3. Step 3: Cross multiply
    278,061.20x = 383,705.16 × 157,208.40
  4. Step 4: Simplify right side
    278,061.20x = 60,321,674,275.34
  5. Step 5: Solve for x
    x = 60,321,674,275.34/278,061.20
  6. Step 6: Final answer
    x = 216,936.68

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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.