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Finding the Fourth Proportional to 340,528.65, 510,791.55 and 103,870.54

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Solution

The fourth proportional to 340,528.65, 510,791.55 and 103,870.54 is: 155,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,528.65 : 510,791.55 = 103,870.54 : x
  2. Step 2: Convert to fraction form
    340,528.65/510,791.55 = 103,870.54/x
  3. Step 3: Cross multiply
    340,528.65x = 510,791.55 × 103,870.54
  4. Step 4: Simplify right side
    340,528.65x = 53,056,194,125.94
  5. Step 5: Solve for x
    x = 53,056,194,125.94/340,528.65
  6. Step 6: Final answer
    x = 155,805.38

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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.