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Finding the Fourth Proportional to 307,956.20, 461,934.30 and 290,460.20

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Solution

The fourth proportional to 307,956.20, 461,934.30 and 290,460.20 is: 435,690.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,956.20 : 461,934.30 = 290,460.20 : x
  2. Step 2: Convert to fraction form
    307,956.20/461,934.30 = 290,460.20/x
  3. Step 3: Cross multiply
    307,956.20x = 461,934.30 × 290,460.20
  4. Step 4: Simplify right side
    307,956.20x = 134,173,529,164.86
  5. Step 5: Solve for x
    x = 134,173,529,164.86/307,956.20
  6. Step 6: Final answer
    x = 435,690.30

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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.