Home / 287,827.12-397,201.80-158,762.70

Finding the Fourth Proportional to 287,827.12, 397,201.80 and 158,762.70

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Solution

The fourth proportional to 287,827.12, 397,201.80 and 158,762.70 is: 219,092.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,827.12 : 397,201.80 = 158,762.70 : x
  2. Step 2: Convert to fraction form
    287,827.12/397,201.80 = 158,762.70/x
  3. Step 3: Cross multiply
    287,827.12x = 397,201.80 × 158,762.70
  4. Step 4: Simplify right side
    287,827.12x = 63,060,830,212.86
  5. Step 5: Solve for x
    x = 63,060,830,212.86/287,827.12
  6. Step 6: Final answer
    x = 219,092.73

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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.