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Finding the Fourth Proportional to 307,931.52, 424,827.52 and 187,029.76

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Solution

The fourth proportional to 307,931.52, 424,827.52 and 187,029.76 is: 258,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,931.52 : 424,827.52 = 187,029.76 : x
  2. Step 2: Convert to fraction form
    307,931.52/424,827.52 = 187,029.76/x
  3. Step 3: Cross multiply
    307,931.52x = 424,827.52 × 187,029.76
  4. Step 4: Simplify right side
    307,931.52x = 79,455,389,107.00
  5. Step 5: Solve for x
    x = 79,455,389,107.00/307,931.52
  6. Step 6: Final answer
    x = 258,029.41

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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.