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Finding the Fourth Proportional to 209,953,786.20, 314,818,704.90 and 88,648,186.20

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Solution

The fourth proportional to 209,953,786.20, 314,818,704.90 and 88,648,186.20 is: 132,925,000.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,786.20 : 314,818,704.90 = 88,648,186.20 : x
  2. Step 2: Convert to fraction form
    209,953,786.20/314,818,704.90 = 88,648,186.20/x
  3. Step 3: Cross multiply
    209,953,786.20x = 314,818,704.90 × 88,648,186.20
  4. Step 4: Simplify right side
    209,953,786.20x = 27,908,107,171,218,052
  5. Step 5: Solve for x
    x = 27,908,107,171,218,052/209,953,786.20
  6. Step 6: Final answer
    x = 132,925,000.67

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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.