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Finding the Fourth Proportional to 345,505.63, 518,332.25 and 120,873.39

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Solution

The fourth proportional to 345,505.63, 518,332.25 and 120,873.39 is: 181,335.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,505.63 : 518,332.25 = 120,873.39 : x
  2. Step 2: Convert to fraction form
    345,505.63/518,332.25 = 120,873.39/x
  3. Step 3: Cross multiply
    345,505.63x = 518,332.25 × 120,873.39
  4. Step 4: Simplify right side
    345,505.63x = 62,652,576,203.83
  5. Step 5: Solve for x
    x = 62,652,576,203.83/345,505.63
  6. Step 6: Final answer
    x = 181,335.91

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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.