Home / 287,227.83-396,421.74-219,116.19

Finding the Fourth Proportional to 287,227.83, 396,421.74 and 219,116.19

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Solution

The fourth proportional to 287,227.83, 396,421.74 and 219,116.19 is: 302,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,227.83 : 396,421.74 = 219,116.19 : x
  2. Step 2: Convert to fraction form
    287,227.83/396,421.74 = 219,116.19/x
  3. Step 3: Cross multiply
    287,227.83x = 396,421.74 × 219,116.19
  4. Step 4: Simplify right side
    287,227.83x = 86,862,421,301.97
  5. Step 5: Solve for x
    x = 86,862,421,301.97/287,227.83
  6. Step 6: Final answer
    x = 302,416.45

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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.