Home / 378,183.32-521,892.98-208,417.45

Finding the Fourth Proportional to 378,183.32, 521,892.98 and 208,417.45

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Solution

The fourth proportional to 378,183.32, 521,892.98 and 208,417.45 is: 287,616.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,183.32 : 521,892.98 = 208,417.45 : x
  2. Step 2: Convert to fraction form
    378,183.32/521,892.98 = 208,417.45/x
  3. Step 3: Cross multiply
    378,183.32x = 521,892.98 × 208,417.45
  4. Step 4: Simplify right side
    378,183.32x = 108,771,602,499.25
  5. Step 5: Solve for x
    x = 108,771,602,499.25/378,183.32
  6. Step 6: Final answer
    x = 287,616.07

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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.