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Finding the Fourth Proportional to 313,820.02, 472,437.56 and 285,919.30

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Solution

The fourth proportional to 313,820.02, 472,437.56 and 285,919.30 is: 430,434.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,820.02 : 472,437.56 = 285,919.30 : x
  2. Step 2: Convert to fraction form
    313,820.02/472,437.56 = 285,919.30/x
  3. Step 3: Cross multiply
    313,820.02x = 472,437.56 × 285,919.30
  4. Step 4: Simplify right side
    313,820.02x = 135,079,015,019.31
  5. Step 5: Solve for x
    x = 135,079,015,019.31/313,820.02
  6. Step 6: Final answer
    x = 430,434.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.