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Finding the Fourth Proportional to 489,127.14, 674,709.48 and 307,551.60

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Solution

The fourth proportional to 489,127.14, 674,709.48 and 307,551.60 is: 424,241.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,127.14 : 674,709.48 = 307,551.60 : x
  2. Step 2: Convert to fraction form
    489,127.14/674,709.48 = 307,551.60/x
  3. Step 3: Cross multiply
    489,127.14x = 674,709.48 × 307,551.60
  4. Step 4: Simplify right side
    489,127.14x = 207,507,980,109.17
  5. Step 5: Solve for x
    x = 207,507,980,109.17/489,127.14
  6. Step 6: Final answer
    x = 424,241.39

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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.