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Finding the Fourth Proportional to 345,513.71, 518,344.36 and 120,881.47

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Solution

The fourth proportional to 345,513.71, 518,344.36 and 120,881.47 is: 181,348.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,513.71 : 518,344.36 = 120,881.47 : x
  2. Step 2: Convert to fraction form
    345,513.71/518,344.36 = 120,881.47/x
  3. Step 3: Cross multiply
    345,513.71x = 518,344.36 × 120,881.47
  4. Step 4: Simplify right side
    345,513.71x = 62,658,228,203.01
  5. Step 5: Solve for x
    x = 62,658,228,203.01/345,513.71
  6. Step 6: Final answer
    x = 181,348.02

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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.