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Finding the Fourth Proportional to 353,364.36, 487,655.82 and 202,490.52

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Solution

The fourth proportional to 353,364.36, 487,655.82 and 202,490.52 is: 279,444.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,364.36 : 487,655.82 = 202,490.52 : x
  2. Step 2: Convert to fraction form
    353,364.36/487,655.82 = 202,490.52/x
  3. Step 3: Cross multiply
    353,364.36x = 487,655.82 × 202,490.52
  4. Step 4: Simplify right side
    353,364.36x = 98,745,680,572.83
  5. Step 5: Solve for x
    x = 98,745,680,572.83/353,364.36
  6. Step 6: Final answer
    x = 279,444.37

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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.