Home / 290,430,143.18-400,781,935.71-158,268,322.88

Finding the Fourth Proportional to 290,430,143.18, 400,781,935.71 and 158,268,322.88

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Solution

The fourth proportional to 290,430,143.18, 400,781,935.71 and 158,268,322.88 is: 218,403,930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,430,143.18 : 400,781,935.71 = 158,268,322.88 : x
  2. Step 2: Convert to fraction form
    290,430,143.18/400,781,935.71 = 158,268,322.88/x
  3. Step 3: Cross multiply
    290,430,143.18x = 400,781,935.71 × 158,268,322.88
  4. Step 4: Simplify right side
    290,430,143.18x = 63,431,084,805,421,680
  5. Step 5: Solve for x
    x = 63,431,084,805,421,680/290,430,143.18
  6. Step 6: Final answer
    x = 218,403,930.50

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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.