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Finding the Fourth Proportional to 210,242.70, 315,329.94 and 60,448.86

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Solution

The fourth proportional to 210,242.70, 315,329.94 and 60,448.86 is: 90,663.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,242.70 : 315,329.94 = 60,448.86 : x
  2. Step 2: Convert to fraction form
    210,242.70/315,329.94 = 60,448.86/x
  3. Step 3: Cross multiply
    210,242.70x = 315,329.94 × 60,448.86
  4. Step 4: Simplify right side
    210,242.70x = 19,061,335,396.87
  5. Step 5: Solve for x
    x = 19,061,335,396.87/210,242.70
  6. Step 6: Final answer
    x = 90,663.48

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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.