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Finding the Fourth Proportional to 307,681.64, 424,600.62 and 169,860.56

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Solution

The fourth proportional to 307,681.64, 424,600.62 and 169,860.56 is: 234,407.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,681.64 : 424,600.62 = 169,860.56 : x
  2. Step 2: Convert to fraction form
    307,681.64/424,600.62 = 169,860.56/x
  3. Step 3: Cross multiply
    307,681.64x = 424,600.62 × 169,860.56
  4. Step 4: Simplify right side
    307,681.64x = 72,122,899,089.55
  5. Step 5: Solve for x
    x = 72,122,899,089.55/307,681.64
  6. Step 6: Final answer
    x = 234,407.55

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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.