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Finding the Fourth Proportional to 210,071.91, 315,012.78 and 60,277.80

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Solution

The fourth proportional to 210,071.91, 315,012.78 and 60,277.80 is: 90,389.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,071.91 : 315,012.78 = 60,277.80 : x
  2. Step 2: Convert to fraction form
    210,071.91/315,012.78 = 60,277.80/x
  3. Step 3: Cross multiply
    210,071.91x = 315,012.78 × 60,277.80
  4. Step 4: Simplify right side
    210,071.91x = 18,988,277,350.28
  5. Step 5: Solve for x
    x = 18,988,277,350.28/210,071.91
  6. Step 6: Final answer
    x = 90,389.42

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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.