Home / 354,231,889.29-489,016,986-220,312,971.42

Finding the Fourth Proportional to 354,231,889.29, 489,016,986 and 220,312,971.42

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Solution

The fourth proportional to 354,231,889.29, 489,016,986 and 220,312,971.42 is: 304,141,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,231,889.29 : 489,016,986 = 220,312,971.42 : x
  2. Step 2: Convert to fraction form
    354,231,889.29/489,016,986 = 220,312,971.42/x
  3. Step 3: Cross multiply
    354,231,889.29x = 489,016,986 × 220,312,971.42
  4. Step 4: Simplify right side
    354,231,889.29x = 107,736,785,260,512,528
  5. Step 5: Solve for x
    x = 107,736,785,260,512,528/354,231,889.29
  6. Step 6: Final answer
    x = 304,141,971.74

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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.