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Finding the Fourth Proportional to 247,428.10, 370,814.10 and 219,215.80

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Solution

The fourth proportional to 247,428.10, 370,814.10 and 219,215.80 is: 328,533.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,428.10 : 370,814.10 = 219,215.80 : x
  2. Step 2: Convert to fraction form
    247,428.10/370,814.10 = 219,215.80/x
  3. Step 3: Cross multiply
    247,428.10x = 370,814.10 × 219,215.80
  4. Step 4: Simplify right side
    247,428.10x = 81,288,309,582.78
  5. Step 5: Solve for x
    x = 81,288,309,582.78/247,428.10
  6. Step 6: Final answer
    x = 328,533.05

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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.