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Finding the Fourth Proportional to 210,608.20, 315,998.70 and 77,552.20

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Solution

The fourth proportional to 210,608.20, 315,998.70 and 77,552.20 is: 116,360.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,608.20 : 315,998.70 = 77,552.20 : x
  2. Step 2: Convert to fraction form
    210,608.20/315,998.70 = 77,552.20/x
  3. Step 3: Cross multiply
    210,608.20x = 315,998.70 × 77,552.20
  4. Step 4: Simplify right side
    210,608.20x = 24,506,394,382.14
  5. Step 5: Solve for x
    x = 24,506,394,382.14/210,608.20
  6. Step 6: Final answer
    x = 116,360.12

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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.