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Finding the Fourth Proportional to 307,937.69, 424,949.53 and 171,970.20

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Solution

The fourth proportional to 307,937.69, 424,949.53 and 171,970.20 is: 237,316.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,937.69 : 424,949.53 = 171,970.20 : x
  2. Step 2: Convert to fraction form
    307,937.69/424,949.53 = 171,970.20/x
  3. Step 3: Cross multiply
    307,937.69x = 424,949.53 × 171,970.20
  4. Step 4: Simplify right side
    307,937.69x = 73,078,655,664.01
  5. Step 5: Solve for x
    x = 73,078,655,664.01/307,937.69
  6. Step 6: Final answer
    x = 237,316.37

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1.5x scale

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.