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Finding the Fourth Proportional to 287,365.22, 431,073.80 and 109,873.77

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Solution

The fourth proportional to 287,365.22, 431,073.80 and 109,873.77 is: 164,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,365.22 : 431,073.80 = 109,873.77 : x
  2. Step 2: Convert to fraction form
    287,365.22/431,073.80 = 109,873.77/x
  3. Step 3: Cross multiply
    287,365.22x = 431,073.80 × 109,873.77
  4. Step 4: Simplify right side
    287,365.22x = 47,363,703,004.86
  5. Step 5: Solve for x
    x = 47,363,703,004.86/287,365.22
  6. Step 6: Final answer
    x = 164,820.59

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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.