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Finding the Fourth Proportional to 439,603, 606,652.50 and 238,399

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Solution

The fourth proportional to 439,603, 606,652.50 and 238,399 is: 328,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,603 : 606,652.50 = 238,399 : x
  2. Step 2: Convert to fraction form
    439,603/606,652.50 = 238,399/x
  3. Step 3: Cross multiply
    439,603x = 606,652.50 × 238,399
  4. Step 4: Simplify right side
    439,603x = 144,625,349,347.50
  5. Step 5: Solve for x
    x = 144,625,349,347.50/439,603
  6. Step 6: Final answer
    x = 328,990.82

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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.