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Finding the Fourth Proportional to 340,020.88, 510,012.86 and 103,345.11

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Solution

The fourth proportional to 340,020.88, 510,012.86 and 103,345.11 is: 155,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,020.88 : 510,012.86 = 103,345.11 : x
  2. Step 2: Convert to fraction form
    340,020.88/510,012.86 = 103,345.11/x
  3. Step 3: Cross multiply
    340,020.88x = 510,012.86 × 103,345.11
  4. Step 4: Simplify right side
    340,020.88x = 52,707,332,568.05
  5. Step 5: Solve for x
    x = 52,707,332,568.05/340,020.88
  6. Step 6: Final answer
    x = 155,012.05

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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.