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Finding the Fourth Proportional to 520,070.10, 780,191.55 and 204,537.30

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Solution

The fourth proportional to 520,070.10, 780,191.55 and 204,537.30 is: 306,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,070.10 : 780,191.55 = 204,537.30 : x
  2. Step 2: Convert to fraction form
    520,070.10/780,191.55 = 204,537.30/x
  3. Step 3: Cross multiply
    520,070.10x = 780,191.55 × 204,537.30
  4. Step 4: Simplify right side
    520,070.10x = 159,578,273,119.82
  5. Step 5: Solve for x
    x = 159,578,273,119.82/520,070.10
  6. Step 6: Final answer
    x = 306,839.93

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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.