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Finding the Fourth Proportional to 346,321.20, 519,481.80 and 121,716.30

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Solution

The fourth proportional to 346,321.20, 519,481.80 and 121,716.30 is: 182,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,321.20 : 519,481.80 = 121,716.30 : x
  2. Step 2: Convert to fraction form
    346,321.20/519,481.80 = 121,716.30/x
  3. Step 3: Cross multiply
    346,321.20x = 519,481.80 × 121,716.30
  4. Step 4: Simplify right side
    346,321.20x = 63,229,402,613.34
  5. Step 5: Solve for x
    x = 63,229,402,613.34/346,321.20
  6. Step 6: Final answer
    x = 182,574.45

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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.