Home / 287,100.52-430,650.94-129,144.46

Finding the Fourth Proportional to 287,100.52, 430,650.94 and 129,144.46

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Solution

The fourth proportional to 287,100.52, 430,650.94 and 129,144.46 is: 193,716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,100.52 : 430,650.94 = 129,144.46 : x
  2. Step 2: Convert to fraction form
    287,100.52/430,650.94 = 129,144.46/x
  3. Step 3: Cross multiply
    287,100.52x = 430,650.94 × 129,144.46
  4. Step 4: Simplify right side
    287,100.52x = 55,616,183,094.79
  5. Step 5: Solve for x
    x = 55,616,183,094.79/287,100.52
  6. Step 6: Final answer
    x = 193,716.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.