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Finding the Fourth Proportional to 287,900.67, 431,835.43 and 88,221.63

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Solution

The fourth proportional to 287,900.67, 431,835.43 and 88,221.63 is: 132,327.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,900.67 : 431,835.43 = 88,221.63 : x
  2. Step 2: Convert to fraction form
    287,900.67/431,835.43 = 88,221.63/x
  3. Step 3: Cross multiply
    287,900.67x = 431,835.43 × 88,221.63
  4. Step 4: Simplify right side
    287,900.67x = 38,097,226,722.01
  5. Step 5: Solve for x
    x = 38,097,226,722.01/287,900.67
  6. Step 6: Final answer
    x = 132,327.68

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1.5x scale

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.