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Finding the Fourth Proportional to 210,882.89, 316,325.55 and 86,223.89

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Solution

The fourth proportional to 210,882.89, 316,325.55 and 86,223.89 is: 129,336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,882.89 : 316,325.55 = 86,223.89 : x
  2. Step 2: Convert to fraction form
    210,882.89/316,325.55 = 86,223.89/x
  3. Step 3: Cross multiply
    210,882.89x = 316,325.55 × 86,223.89
  4. Step 4: Simplify right side
    210,882.89x = 27,274,820,541.54
  5. Step 5: Solve for x
    x = 27,274,820,541.54/210,882.89
  6. Step 6: Final answer
    x = 129,336.34

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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.