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Finding the Fourth Proportional to 287,997.72, 432,189.44 and 119,518.20

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Solution

The fourth proportional to 287,997.72, 432,189.44 and 119,518.20 is: 179,357.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,997.72 : 432,189.44 = 119,518.20 : x
  2. Step 2: Convert to fraction form
    287,997.72/432,189.44 = 119,518.20/x
  3. Step 3: Cross multiply
    287,997.72x = 432,189.44 × 119,518.20
  4. Step 4: Simplify right side
    287,997.72x = 51,654,503,927.81
  5. Step 5: Solve for x
    x = 51,654,503,927.81/287,997.72
  6. Step 6: Final answer
    x = 179,357.34

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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.