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Finding the Fourth Proportional to 464,978.88, 641,670.51 and 261,030.20

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Solution

The fourth proportional to 464,978.88, 641,670.51 and 261,030.20 is: 360,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,978.88 : 641,670.51 = 261,030.20 : x
  2. Step 2: Convert to fraction form
    464,978.88/641,670.51 = 261,030.20/x
  3. Step 3: Cross multiply
    464,978.88x = 641,670.51 × 261,030.20
  4. Step 4: Simplify right side
    464,978.88x = 167,495,377,861.62
  5. Step 5: Solve for x
    x = 167,495,377,861.62/464,978.88
  6. Step 6: Final answer
    x = 360,221.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.