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Finding the Fourth Proportional to 340,287, 510,391.59 and 90,988.44

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Solution

The fourth proportional to 340,287, 510,391.59 and 90,988.44 is: 136,472.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,287 : 510,391.59 = 90,988.44 : x
  2. Step 2: Convert to fraction form
    340,287/510,391.59 = 90,988.44/x
  3. Step 3: Cross multiply
    340,287x = 510,391.59 × 90,988.44
  4. Step 4: Simplify right side
    340,287x = 46,439,734,563.22
  5. Step 5: Solve for x
    x = 46,439,734,563.22/340,287
  6. Step 6: Final answer
    x = 136,472.26

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1.5x scale

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.