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Finding the Fourth Proportional to 312,410.39, 468,240.08 and 143,698.32

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Solution

The fourth proportional to 312,410.39, 468,240.08 and 143,698.32 is: 215,374.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,410.39 : 468,240.08 = 143,698.32 : x
  2. Step 2: Convert to fraction form
    312,410.39/468,240.08 = 143,698.32/x
  3. Step 3: Cross multiply
    312,410.39x = 468,240.08 × 143,698.32
  4. Step 4: Simplify right side
    312,410.39x = 67,285,312,134.17
  5. Step 5: Solve for x
    x = 67,285,312,134.17/312,410.39
  6. Step 6: Final answer
    x = 215,374.76

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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.