Home / 290,430,135.68-400,781,925.38-158,268,315.38

Finding the Fourth Proportional to 290,430,135.68, 400,781,925.38 and 158,268,315.38

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Solution

The fourth proportional to 290,430,135.68, 400,781,925.38 and 158,268,315.38 is: 218,403,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,430,135.68 : 400,781,925.38 = 158,268,315.38 : x
  2. Step 2: Convert to fraction form
    290,430,135.68/400,781,925.38 = 158,268,315.38/x
  3. Step 3: Cross multiply
    290,430,135.68x = 400,781,925.38 × 158,268,315.38
  4. Step 4: Simplify right side
    290,430,135.68x = 63,431,080,163,037,224
  5. Step 5: Solve for x
    x = 63,431,080,163,037,224/290,430,135.68
  6. Step 6: Final answer
    x = 218,403,920.16

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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.