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Finding the Fourth Proportional to 210,847.60, 316,314.60 and 70,706.80

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Solution

The fourth proportional to 210,847.60, 316,314.60 and 70,706.80 is: 106,074.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,847.60 : 316,314.60 = 70,706.80 : x
  2. Step 2: Convert to fraction form
    210,847.60/316,314.60 = 70,706.80/x
  3. Step 3: Cross multiply
    210,847.60x = 316,314.60 × 70,706.80
  4. Step 4: Simplify right side
    210,847.60x = 22,365,593,159.28
  5. Step 5: Solve for x
    x = 22,365,593,159.28/210,847.60
  6. Step 6: Final answer
    x = 106,074.69

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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.