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Finding the Fourth Proportional to 287,865.04, 397,254.12 and 158,800.56

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Solution

The fourth proportional to 287,865.04, 397,254.12 and 158,800.56 is: 219,144.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,865.04 : 397,254.12 = 158,800.56 : x
  2. Step 2: Convert to fraction form
    287,865.04/397,254.12 = 158,800.56/x
  3. Step 3: Cross multiply
    287,865.04x = 397,254.12 × 158,800.56
  4. Step 4: Simplify right side
    287,865.04x = 63,084,176,718.31
  5. Step 5: Solve for x
    x = 63,084,176,718.31/287,865.04
  6. Step 6: Final answer
    x = 219,144.97

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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.