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Finding the Fourth Proportional to 207,312.60, 310,580.10 and 193,315.80

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Solution

The fourth proportional to 207,312.60, 310,580.10 and 193,315.80 is: 289,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,312.60 : 310,580.10 = 193,315.80 : x
  2. Step 2: Convert to fraction form
    207,312.60/310,580.10 = 193,315.80/x
  3. Step 3: Cross multiply
    207,312.60x = 310,580.10 × 193,315.80
  4. Step 4: Simplify right side
    207,312.60x = 60,040,040,495.58
  5. Step 5: Solve for x
    x = 60,040,040,495.58/207,312.60
  6. Step 6: Final answer
    x = 289,611.15

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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.