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Finding the Fourth Proportional to 302,356.53, 453,600.42 and 91,989

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Solution

The fourth proportional to 302,356.53, 453,600.42 and 91,989 is: 138,003.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,356.53 : 453,600.42 = 91,989 : x
  2. Step 2: Convert to fraction form
    302,356.53/453,600.42 = 91,989/x
  3. Step 3: Cross multiply
    302,356.53x = 453,600.42 × 91,989
  4. Step 4: Simplify right side
    302,356.53x = 41,726,249,035.38
  5. Step 5: Solve for x
    x = 41,726,249,035.38/302,356.53
  6. Step 6: Final answer
    x = 138,003.47

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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.