Home / 278,728.31-384,433.12-192,830.24

Finding the Fourth Proportional to 278,728.31, 384,433.12 and 192,830.24

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Solution

The fourth proportional to 278,728.31, 384,433.12 and 192,830.24 is: 265,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,728.31 : 384,433.12 = 192,830.24 : x
  2. Step 2: Convert to fraction form
    278,728.31/384,433.12 = 192,830.24/x
  3. Step 3: Cross multiply
    278,728.31x = 384,433.12 × 192,830.24
  4. Step 4: Simplify right side
    278,728.31x = 74,130,330,793.55
  5. Step 5: Solve for x
    x = 74,130,330,793.55/278,728.31
  6. Step 6: Final answer
    x = 265,959.10

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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.