Home / 431,013.61-646,621.51-131,494.08

Finding the Fourth Proportional to 431,013.61, 646,621.51 and 131,494.08

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Solution

The fourth proportional to 431,013.61, 646,621.51 and 131,494.08 is: 197,271.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,013.61 : 646,621.51 = 131,494.08 : x
  2. Step 2: Convert to fraction form
    431,013.61/646,621.51 = 131,494.08/x
  3. Step 3: Cross multiply
    431,013.61x = 646,621.51 × 131,494.08
  4. Step 4: Simplify right side
    431,013.61x = 85,026,900,565.66
  5. Step 5: Solve for x
    x = 85,026,900,565.66/431,013.61
  6. Step 6: Final answer
    x = 197,271.96

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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.