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Finding the Fourth Proportional to 348,034.40, 522,051.36 and 85,378.40

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Solution

The fourth proportional to 348,034.40, 522,051.36 and 85,378.40 is: 128,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,034.40 : 522,051.36 = 85,378.40 : x
  2. Step 2: Convert to fraction form
    348,034.40/522,051.36 = 85,378.40/x
  3. Step 3: Cross multiply
    348,034.40x = 522,051.36 × 85,378.40
  4. Step 4: Simplify right side
    348,034.40x = 44,571,909,834.62
  5. Step 5: Solve for x
    x = 44,571,909,834.62/348,034.40
  6. Step 6: Final answer
    x = 128,067.54

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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.