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Finding the Fourth Proportional to 388,358.03, 581,790.72 and 238,160.33

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Solution

The fourth proportional to 388,358.03, 581,790.72 and 238,160.33 is: 356,782.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,358.03 : 581,790.72 = 238,160.33 : x
  2. Step 2: Convert to fraction form
    388,358.03/581,790.72 = 238,160.33/x
  3. Step 3: Cross multiply
    388,358.03x = 581,790.72 × 238,160.33
  4. Step 4: Simplify right side
    388,358.03x = 138,559,471,320.61
  5. Step 5: Solve for x
    x = 138,559,471,320.61/388,358.03
  6. Step 6: Final answer
    x = 356,782.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.