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Finding the Fourth Proportional to 307,316.93, 424,066.32 and 171,338.11

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Solution

The fourth proportional to 307,316.93, 424,066.32 and 171,338.11 is: 236,429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,316.93 : 424,066.32 = 171,338.11 : x
  2. Step 2: Convert to fraction form
    307,316.93/424,066.32 = 171,338.11/x
  3. Step 3: Cross multiply
    307,316.93x = 424,066.32 × 171,338.11
  4. Step 4: Simplify right side
    307,316.93x = 72,658,720,723.29
  5. Step 5: Solve for x
    x = 72,658,720,723.29/307,316.93
  6. Step 6: Final answer
    x = 236,429.28

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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.