Home / 378,381.32-522,169.76-208,621.52

Finding the Fourth Proportional to 378,381.32, 522,169.76 and 208,621.52

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Solution

The fourth proportional to 378,381.32, 522,169.76 and 208,621.52 is: 287,899.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,381.32 : 522,169.76 = 208,621.52 : x
  2. Step 2: Convert to fraction form
    378,381.32/522,169.76 = 208,621.52/x
  3. Step 3: Cross multiply
    378,381.32x = 522,169.76 × 208,621.52
  4. Step 4: Simplify right side
    378,381.32x = 108,935,849,029.24
  5. Step 5: Solve for x
    x = 108,935,849,029.24/378,381.32
  6. Step 6: Final answer
    x = 287,899.65

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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.