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Finding the Fourth Proportional to 213,085.98, 319,545.42 and 79,893.63

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Solution

The fourth proportional to 213,085.98, 319,545.42 and 79,893.63 is: 119,809.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,085.98 : 319,545.42 = 79,893.63 : x
  2. Step 2: Convert to fraction form
    213,085.98/319,545.42 = 79,893.63/x
  3. Step 3: Cross multiply
    213,085.98x = 319,545.42 × 79,893.63
  4. Step 4: Simplify right side
    213,085.98x = 25,529,643,553.67
  5. Step 5: Solve for x
    x = 25,529,643,553.67/213,085.98
  6. Step 6: Final answer
    x = 119,809.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.