Home / 389,752,568.16-537,790,183.56-222,412,426.08

Finding the Fourth Proportional to 389,752,568.16, 537,790,183.56 and 222,412,426.08

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Solution

The fourth proportional to 389,752,568.16, 537,790,183.56 and 222,412,426.08 is: 306,890,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,752,568.16 : 537,790,183.56 = 222,412,426.08 : x
  2. Step 2: Convert to fraction form
    389,752,568.16/537,790,183.56 = 222,412,426.08/x
  3. Step 3: Cross multiply
    389,752,568.16x = 537,790,183.56 × 222,412,426.08
  4. Step 4: Simplify right side
    389,752,568.16x = 119,611,219,447,588,128
  5. Step 5: Solve for x
    x = 119,611,219,447,588,128/389,752,568.16
  6. Step 6: Final answer
    x = 306,890,138.05

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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.