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Finding the Fourth Proportional to 381,769.20, 572,653.80 and 348,526.80

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Solution

The fourth proportional to 381,769.20, 572,653.80 and 348,526.80 is: 522,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,769.20 : 572,653.80 = 348,526.80 : x
  2. Step 2: Convert to fraction form
    381,769.20/572,653.80 = 348,526.80/x
  3. Step 3: Cross multiply
    381,769.20x = 572,653.80 × 348,526.80
  4. Step 4: Simplify right side
    381,769.20x = 199,585,196,421.84
  5. Step 5: Solve for x
    x = 199,585,196,421.84/381,769.20
  6. Step 6: Final answer
    x = 522,790.20

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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.