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Finding the Fourth Proportional to 518,097.52, 777,082.69 and 139,048.08

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Solution

The fourth proportional to 518,097.52, 777,082.69 and 139,048.08 is: 208,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,097.52 : 777,082.69 = 139,048.08 : x
  2. Step 2: Convert to fraction form
    518,097.52/777,082.69 = 139,048.08/x
  3. Step 3: Cross multiply
    518,097.52x = 777,082.69 × 139,048.08
  4. Step 4: Simplify right side
    518,097.52x = 108,051,856,045.74
  5. Step 5: Solve for x
    x = 108,051,856,045.74/518,097.52
  6. Step 6: Final answer
    x = 208,555.05

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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.