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Finding the Fourth Proportional to 207,499.20, 310,811.40 and 185,337.60

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Solution

The fourth proportional to 207,499.20, 310,811.40 and 185,337.60 is: 277,615.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,499.20 : 310,811.40 = 185,337.60 : x
  2. Step 2: Convert to fraction form
    207,499.20/310,811.40 = 185,337.60/x
  3. Step 3: Cross multiply
    207,499.20x = 310,811.40 × 185,337.60
  4. Step 4: Simplify right side
    207,499.20x = 57,605,038,928.64
  5. Step 5: Solve for x
    x = 57,605,038,928.64/207,499.20
  6. Step 6: Final answer
    x = 277,615.72

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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.