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Finding the Fourth Proportional to 307,273.17, 424,038.74 and 171,315.75

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Solution

The fourth proportional to 307,273.17, 424,038.74 and 171,315.75 is: 236,416.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,273.17 : 424,038.74 = 171,315.75 : x
  2. Step 2: Convert to fraction form
    307,273.17/424,038.74 = 171,315.75/x
  3. Step 3: Cross multiply
    307,273.17x = 424,038.74 × 171,315.75
  4. Step 4: Simplify right side
    307,273.17x = 72,644,513,915.58
  5. Step 5: Solve for x
    x = 72,644,513,915.58/307,273.17
  6. Step 6: Final answer
    x = 236,416.72

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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.