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Finding the Fourth Proportional to 353,163, 487,364.94 and 202,269.72

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Solution

The fourth proportional to 353,163, 487,364.94 and 202,269.72 is: 279,132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,163 : 487,364.94 = 202,269.72 : x
  2. Step 2: Convert to fraction form
    353,163/487,364.94 = 202,269.72/x
  3. Step 3: Cross multiply
    353,163x = 487,364.94 × 202,269.72
  4. Step 4: Simplify right side
    353,163x = 98,579,169,951.62
  5. Step 5: Solve for x
    x = 98,579,169,951.62/353,163
  6. Step 6: Final answer
    x = 279,132.21

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1.5x scale

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.