Home / 210,222.48-315,381.24-69,986.64

Finding the Fourth Proportional to 210,222.48, 315,381.24 and 69,986.64

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Solution

The fourth proportional to 210,222.48, 315,381.24 and 69,986.64 is: 104,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,222.48 : 315,381.24 = 69,986.64 : x
  2. Step 2: Convert to fraction form
    210,222.48/315,381.24 = 69,986.64/x
  3. Step 3: Cross multiply
    210,222.48x = 315,381.24 × 69,986.64
  4. Step 4: Simplify right side
    210,222.48x = 22,072,473,306.63
  5. Step 5: Solve for x
    x = 22,072,473,306.63/210,222.48
  6. Step 6: Final answer
    x = 104,995.78

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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.