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Finding the Fourth Proportional to 287,800.79, 397,155.29 and 158,744.39

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Solution

The fourth proportional to 287,800.79, 397,155.29 and 158,744.39 is: 219,061.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,800.79 : 397,155.29 = 158,744.39 : x
  2. Step 2: Convert to fraction form
    287,800.79/397,155.29 = 158,744.39/x
  3. Step 3: Cross multiply
    287,800.79x = 397,155.29 × 158,744.39
  4. Step 4: Simplify right side
    287,800.79x = 63,046,171,466.82
  5. Step 5: Solve for x
    x = 63,046,171,466.82/287,800.79
  6. Step 6: Final answer
    x = 219,061.85

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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.