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Finding the Fourth Proportional to 287,999.72, 432,192.44 and 119,520.20

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Solution

The fourth proportional to 287,999.72, 432,192.44 and 119,520.20 is: 179,360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,999.72 : 432,192.44 = 119,520.20 : x
  2. Step 2: Convert to fraction form
    287,999.72/432,192.44 = 119,520.20/x
  3. Step 3: Cross multiply
    287,999.72x = 432,192.44 × 119,520.20
  4. Step 4: Simplify right side
    287,999.72x = 51,655,726,867.29
  5. Step 5: Solve for x
    x = 51,655,726,867.29/287,999.72
  6. Step 6: Final answer
    x = 179,360.34

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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.