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Finding the Fourth Proportional to 348,036.40, 522,054.36 and 85,380.40

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Solution

The fourth proportional to 348,036.40, 522,054.36 and 85,380.40 is: 128,070.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,036.40 : 522,054.36 = 85,380.40 : x
  2. Step 2: Convert to fraction form
    348,036.40/522,054.36 = 85,380.40/x
  3. Step 3: Cross multiply
    348,036.40x = 522,054.36 × 85,380.40
  4. Step 4: Simplify right side
    348,036.40x = 44,573,210,078.54
  5. Step 5: Solve for x
    x = 44,573,210,078.54/348,036.40
  6. Step 6: Final answer
    x = 128,070.54

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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.