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Finding the Fourth Proportional to 431,210.88, 646,885.44 and 181,929.60

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Solution

The fourth proportional to 431,210.88, 646,885.44 and 181,929.60 is: 272,923.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,210.88 : 646,885.44 = 181,929.60 : x
  2. Step 2: Convert to fraction form
    431,210.88/646,885.44 = 181,929.60/x
  3. Step 3: Cross multiply
    431,210.88x = 646,885.44 × 181,929.60
  4. Step 4: Simplify right side
    431,210.88x = 117,687,609,345.02
  5. Step 5: Solve for x
    x = 117,687,609,345.02/431,210.88
  6. Step 6: Final answer
    x = 272,923.56

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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.