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Finding the Fourth Proportional to 287,592.92, 431,238.29 and 127,599.54

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Solution

The fourth proportional to 287,592.92, 431,238.29 and 127,599.54 is: 191,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,592.92 : 431,238.29 = 127,599.54 : x
  2. Step 2: Convert to fraction form
    287,592.92/431,238.29 = 127,599.54/x
  3. Step 3: Cross multiply
    287,592.92x = 431,238.29 × 127,599.54
  4. Step 4: Simplify right side
    287,592.92x = 55,025,807,434.39
  5. Step 5: Solve for x
    x = 55,025,807,434.39/287,592.92
  6. Step 6: Final answer
    x = 191,332.27

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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.