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Finding the Fourth Proportional to 520,080.10, 780,206.55 and 204,547.30

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Solution

The fourth proportional to 520,080.10, 780,206.55 and 204,547.30 is: 306,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,080.10 : 780,206.55 = 204,547.30 : x
  2. Step 2: Convert to fraction form
    520,080.10/780,206.55 = 204,547.30/x
  3. Step 3: Cross multiply
    520,080.10x = 780,206.55 × 204,547.30
  4. Step 4: Simplify right side
    520,080.10x = 159,589,143,244.82
  5. Step 5: Solve for x
    x = 159,589,143,244.82/520,080.10
  6. Step 6: Final answer
    x = 306,854.93

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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.