Home / 278,005.14-383,642.93-157,142.18

Finding the Fourth Proportional to 278,005.14, 383,642.93 and 157,142.18

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Solution

The fourth proportional to 278,005.14, 383,642.93 and 157,142.18 is: 216,853.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,005.14 : 383,642.93 = 157,142.18 : x
  2. Step 2: Convert to fraction form
    278,005.14/383,642.93 = 157,142.18/x
  3. Step 3: Cross multiply
    278,005.14x = 383,642.93 × 157,142.18
  4. Step 4: Simplify right side
    278,005.14x = 60,286,483,657.86
  5. Step 5: Solve for x
    x = 60,286,483,657.86/278,005.14
  6. Step 6: Final answer
    x = 216,853.85

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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.