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Finding the Fourth Proportional to 353,336, 487,603.68 and 202,520.48

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Solution

The fourth proportional to 353,336, 487,603.68 and 202,520.48 is: 279,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,336 : 487,603.68 = 202,520.48 : x
  2. Step 2: Convert to fraction form
    353,336/487,603.68 = 202,520.48/x
  3. Step 3: Cross multiply
    353,336x = 487,603.68 × 202,520.48
  4. Step 4: Simplify right side
    353,336x = 98,749,731,323.37
  5. Step 5: Solve for x
    x = 98,749,731,323.37/353,336
  6. Step 6: Final answer
    x = 279,478.26

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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.