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Finding the Fourth Proportional to 378,530.60, 522,240.32 and 242,639.48

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Solution

The fourth proportional to 378,530.60, 522,240.32 and 242,639.48 is: 334,757.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,530.60 : 522,240.32 = 242,639.48 : x
  2. Step 2: Convert to fraction form
    378,530.60/522,240.32 = 242,639.48/x
  3. Step 3: Cross multiply
    378,530.60x = 522,240.32 × 242,639.48
  4. Step 4: Simplify right side
    378,530.60x = 126,716,119,679.83
  5. Step 5: Solve for x
    x = 126,716,119,679.83/378,530.60
  6. Step 6: Final answer
    x = 334,757.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.