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Finding the Fourth Proportional to 287,993.37, 432,053.21 and 88,328.73

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Solution

The fourth proportional to 287,993.37, 432,053.21 and 88,328.73 is: 132,512.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,993.37 : 432,053.21 = 88,328.73 : x
  2. Step 2: Convert to fraction form
    287,993.37/432,053.21 = 88,328.73/x
  3. Step 3: Cross multiply
    287,993.37x = 432,053.21 × 88,328.73
  4. Step 4: Simplify right side
    287,993.37x = 38,162,710,890.08
  5. Step 5: Solve for x
    x = 38,162,710,890.08/287,993.37
  6. Step 6: Final answer
    x = 132,512.46

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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.