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Finding the Fourth Proportional to 207,253.60, 310,880.40 and 74,125.78

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Solution

The fourth proportional to 207,253.60, 310,880.40 and 74,125.78 is: 111,188.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,253.60 : 310,880.40 = 74,125.78 : x
  2. Step 2: Convert to fraction form
    207,253.60/310,880.40 = 74,125.78/x
  3. Step 3: Cross multiply
    207,253.60x = 310,880.40 × 74,125.78
  4. Step 4: Simplify right side
    207,253.60x = 23,044,252,136.71
  5. Step 5: Solve for x
    x = 23,044,252,136.71/207,253.60
  6. Step 6: Final answer
    x = 111,188.67

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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.