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Finding the Fourth Proportional to 287,888.95, 397,298.78 and 158,826.79

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Solution

The fourth proportional to 287,888.95, 397,298.78 and 158,826.79 is: 219,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,888.95 : 397,298.78 = 158,826.79 : x
  2. Step 2: Convert to fraction form
    287,888.95/397,298.78 = 158,826.79/x
  3. Step 3: Cross multiply
    287,888.95x = 397,298.78 × 158,826.79
  4. Step 4: Simplify right side
    287,888.95x = 63,101,689,898.32
  5. Step 5: Solve for x
    x = 63,101,689,898.32/287,888.95
  6. Step 6: Final answer
    x = 219,187.61

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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.