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Finding the Fourth Proportional to 307,606.40, 424,497.86 and 171,637.87

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Solution

The fourth proportional to 307,606.40, 424,497.86 and 171,637.87 is: 236,860.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,606.40 : 424,497.86 = 171,637.87 : x
  2. Step 2: Convert to fraction form
    307,606.40/424,497.86 = 171,637.87/x
  3. Step 3: Cross multiply
    307,606.40x = 424,497.86 × 171,637.87
  4. Step 4: Simplify right side
    307,606.40x = 72,859,907,877.81
  5. Step 5: Solve for x
    x = 72,859,907,877.81/307,606.40
  6. Step 6: Final answer
    x = 236,860.84

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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.