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Finding the Fourth Proportional to 307,918.53, 424,543.25 and 235,411.28

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Solution

The fourth proportional to 307,918.53, 424,543.25 and 235,411.28 is: 324,573.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,918.53 : 424,543.25 = 235,411.28 : x
  2. Step 2: Convert to fraction form
    307,918.53/424,543.25 = 235,411.28/x
  3. Step 3: Cross multiply
    307,918.53x = 424,543.25 × 235,411.28
  4. Step 4: Simplify right side
    307,918.53x = 99,942,266,598.09
  5. Step 5: Solve for x
    x = 99,942,266,598.09/307,918.53
  6. Step 6: Final answer
    x = 324,573.73

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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.