Home / 287,746.20-431,619.30-110,161.80

Finding the Fourth Proportional to 287,746.20, 431,619.30 and 110,161.80

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Solution

The fourth proportional to 287,746.20, 431,619.30 and 110,161.80 is: 165,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,746.20 : 431,619.30 = 110,161.80 : x
  2. Step 2: Convert to fraction form
    287,746.20/431,619.30 = 110,161.80/x
  3. Step 3: Cross multiply
    287,746.20x = 431,619.30 × 110,161.80
  4. Step 4: Simplify right side
    287,746.20x = 47,547,959,002.74
  5. Step 5: Solve for x
    x = 47,547,959,002.74/287,746.20
  6. Step 6: Final answer
    x = 165,242.70

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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.