Home / 278,572.06-384,438.76-156,069.74

Finding the Fourth Proportional to 278,572.06, 384,438.76 and 156,069.74

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Solution

The fourth proportional to 278,572.06, 384,438.76 and 156,069.74 is: 215,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,572.06 : 384,438.76 = 156,069.74 : x
  2. Step 2: Convert to fraction form
    278,572.06/384,438.76 = 156,069.74/x
  3. Step 3: Cross multiply
    278,572.06x = 384,438.76 × 156,069.74
  4. Step 4: Simplify right side
    278,572.06x = 59,999,255,727.58
  5. Step 5: Solve for x
    x = 59,999,255,727.58/278,572.06
  6. Step 6: Final answer
    x = 215,381.45

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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.