Home / 400,742.99-553,037.85-219,472.13

Finding the Fourth Proportional to 400,742.99, 553,037.85 and 219,472.13

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Solution

The fourth proportional to 400,742.99, 553,037.85 and 219,472.13 is: 302,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,742.99 : 553,037.85 = 219,472.13 : x
  2. Step 2: Convert to fraction form
    400,742.99/553,037.85 = 219,472.13/x
  3. Step 3: Cross multiply
    400,742.99x = 553,037.85 × 219,472.13
  4. Step 4: Simplify right side
    400,742.99x = 121,376,396,909.98
  5. Step 5: Solve for x
    x = 121,376,396,909.98/400,742.99
  6. Step 6: Final answer
    x = 302,878.40

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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.