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Finding the Fourth Proportional to 438,603.82, 605,373.24 and 285,371.67

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Solution

The fourth proportional to 438,603.82, 605,373.24 and 285,371.67 is: 393,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,603.82 : 605,373.24 = 285,371.67 : x
  2. Step 2: Convert to fraction form
    438,603.82/605,373.24 = 285,371.67/x
  3. Step 3: Cross multiply
    438,603.82x = 605,373.24 × 285,371.67
  4. Step 4: Simplify right side
    438,603.82x = 172,756,369,445.25
  5. Step 5: Solve for x
    x = 172,756,369,445.25/438,603.82
  6. Step 6: Final answer
    x = 393,877.94

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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.