Home / 278,225.74-383,960.21-157,364.66

Finding the Fourth Proportional to 278,225.74, 383,960.21 and 157,364.66

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Solution

The fourth proportional to 278,225.74, 383,960.21 and 157,364.66 is: 217,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,225.74 : 383,960.21 = 157,364.66 : x
  2. Step 2: Convert to fraction form
    278,225.74/383,960.21 = 157,364.66/x
  3. Step 3: Cross multiply
    278,225.74x = 383,960.21 × 157,364.66
  4. Step 4: Simplify right side
    278,225.74x = 60,421,767,900.18
  5. Step 5: Solve for x
    x = 60,421,767,900.18/278,225.74
  6. Step 6: Final answer
    x = 217,168.15

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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.