Home / 278,279.01-384,025.16-157,417.72

Finding the Fourth Proportional to 278,279.01, 384,025.16 and 157,417.72

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Solution

The fourth proportional to 278,279.01, 384,025.16 and 157,417.72 is: 217,236.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,279.01 : 384,025.16 = 157,417.72 : x
  2. Step 2: Convert to fraction form
    278,279.01/384,025.16 = 157,417.72/x
  3. Step 3: Cross multiply
    278,279.01x = 384,025.16 × 157,417.72
  4. Step 4: Simplify right side
    278,279.01x = 60,452,365,109.84
  5. Step 5: Solve for x
    x = 60,452,365,109.84/278,279.01
  6. Step 6: Final answer
    x = 217,236.52

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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.