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Finding the Fourth Proportional to 346,750.20, 520,271.10 and 189,091.80

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Solution

The fourth proportional to 346,750.20, 520,271.10 and 189,091.80 is: 283,717.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,750.20 : 520,271.10 = 189,091.80 : x
  2. Step 2: Convert to fraction form
    346,750.20/520,271.10 = 189,091.80/x
  3. Step 3: Cross multiply
    346,750.20x = 520,271.10 × 189,091.80
  4. Step 4: Simplify right side
    346,750.20x = 98,378,998,786.98
  5. Step 5: Solve for x
    x = 98,378,998,786.98/346,750.20
  6. Step 6: Final answer
    x = 283,717.21

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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.