Home / 400,645.40-552,869.64-219,322.58

Finding the Fourth Proportional to 400,645.40, 552,869.64 and 219,322.58

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Solution

The fourth proportional to 400,645.40, 552,869.64 and 219,322.58 is: 302,653.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,645.40 : 552,869.64 = 219,322.58 : x
  2. Step 2: Convert to fraction form
    400,645.40/552,869.64 = 219,322.58/x
  3. Step 3: Cross multiply
    400,645.40x = 552,869.64 × 219,322.58
  4. Step 4: Simplify right side
    400,645.40x = 121,256,793,084.12
  5. Step 5: Solve for x
    x = 121,256,793,084.12/400,645.40
  6. Step 6: Final answer
    x = 302,653.65

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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.