Home / 346,078.20-519,117.30-287,758.20

Finding the Fourth Proportional to 346,078.20, 519,117.30 and 287,758.20

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Solution

The fourth proportional to 346,078.20, 519,117.30 and 287,758.20 is: 431,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,078.20 : 519,117.30 = 287,758.20 : x
  2. Step 2: Convert to fraction form
    346,078.20/519,117.30 = 287,758.20/x
  3. Step 3: Cross multiply
    346,078.20x = 519,117.30 × 287,758.20
  4. Step 4: Simplify right side
    346,078.20x = 149,380,259,836.86
  5. Step 5: Solve for x
    x = 149,380,259,836.86/346,078.20
  6. Step 6: Final answer
    x = 431,637.30

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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.