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Finding the Fourth Proportional to 210,850.60, 316,319.10 and 70,709.80

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Solution

The fourth proportional to 210,850.60, 316,319.10 and 70,709.80 is: 106,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,850.60 : 316,319.10 = 70,709.80 : x
  2. Step 2: Convert to fraction form
    210,850.60/316,319.10 = 70,709.80/x
  3. Step 3: Cross multiply
    210,850.60x = 316,319.10 × 70,709.80
  4. Step 4: Simplify right side
    210,850.60x = 22,366,860,297.18
  5. Step 5: Solve for x
    x = 22,366,860,297.18/210,850.60
  6. Step 6: Final answer
    x = 106,079.19

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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.