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Finding the Fourth Proportional to 388,237.86, 581,610.42 and 238,040.10

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Solution

The fourth proportional to 388,237.86, 581,610.42 and 238,040.10 is: 356,602.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,237.86 : 581,610.42 = 238,040.10 : x
  2. Step 2: Convert to fraction form
    388,237.86/581,610.42 = 238,040.10/x
  3. Step 3: Cross multiply
    388,237.86x = 581,610.42 × 238,040.10
  4. Step 4: Simplify right side
    388,237.86x = 138,446,602,537.84
  5. Step 5: Solve for x
    x = 138,446,602,537.84/388,237.86
  6. Step 6: Final answer
    x = 356,602.53

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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.