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Finding the Fourth Proportional to 287,325.88, 396,518.74 and 158,273.71

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Solution

The fourth proportional to 287,325.88, 396,518.74 and 158,273.71 is: 218,422.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,325.88 : 396,518.74 = 158,273.71 : x
  2. Step 2: Convert to fraction form
    287,325.88/396,518.74 = 158,273.71/x
  3. Step 3: Cross multiply
    287,325.88x = 396,518.74 × 158,273.71
  4. Step 4: Simplify right side
    287,325.88x = 62,758,490,677.34
  5. Step 5: Solve for x
    x = 62,758,490,677.34/287,325.88
  6. Step 6: Final answer
    x = 218,422.69

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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.