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Finding the Fourth Proportional to 346,508.28, 519,806.16 and 121,815.90

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Solution

The fourth proportional to 346,508.28, 519,806.16 and 121,815.90 is: 182,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,508.28 : 519,806.16 = 121,815.90 : x
  2. Step 2: Convert to fraction form
    346,508.28/519,806.16 = 121,815.90/x
  3. Step 3: Cross multiply
    346,508.28x = 519,806.16 × 121,815.90
  4. Step 4: Simplify right side
    346,508.28x = 63,320,655,205.94
  5. Step 5: Solve for x
    x = 63,320,655,205.94/346,508.28
  6. Step 6: Final answer
    x = 182,739.23

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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.