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Finding the Fourth Proportional to 307,851.93, 424,831.66 and 171,888.21

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Solution

The fourth proportional to 307,851.93, 424,831.66 and 171,888.21 is: 237,203.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,851.93 : 424,831.66 = 171,888.21 : x
  2. Step 2: Convert to fraction form
    307,851.93/424,831.66 = 171,888.21/x
  3. Step 3: Cross multiply
    307,851.93x = 424,831.66 × 171,888.21
  4. Step 4: Simplify right side
    307,851.93x = 73,023,553,159.01
  5. Step 5: Solve for x
    x = 73,023,553,159.01/307,851.93
  6. Step 6: Final answer
    x = 237,203.49

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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.