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Finding the Fourth Proportional to 231,407.73, 319,338.44 and 130,805.73

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Solution

The fourth proportional to 231,407.73, 319,338.44 and 130,805.73 is: 180,509.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,407.73 : 319,338.44 = 130,805.73 : x
  2. Step 2: Convert to fraction form
    231,407.73/319,338.44 = 130,805.73/x
  3. Step 3: Cross multiply
    231,407.73x = 319,338.44 × 130,805.73
  4. Step 4: Simplify right side
    231,407.73x = 41,771,299,285.79
  5. Step 5: Solve for x
    x = 41,771,299,285.79/231,407.73
  6. Step 6: Final answer
    x = 180,509.52

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1.5x scale

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.