Home / 401,442.86-553,951.22-231,731.66

Finding the Fourth Proportional to 401,442.86, 553,951.22 and 231,731.66

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Solution

The fourth proportional to 401,442.86, 553,951.22 and 231,731.66 is: 319,766.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,442.86 : 553,951.22 = 231,731.66 : x
  2. Step 2: Convert to fraction form
    401,442.86/553,951.22 = 231,731.66/x
  3. Step 3: Cross multiply
    401,442.86x = 553,951.22 × 231,731.66
  4. Step 4: Simplify right side
    401,442.86x = 128,368,035,769.63
  5. Step 5: Solve for x
    x = 128,368,035,769.63/401,442.86
  6. Step 6: Final answer
    x = 319,766.64

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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.