Home / 290,448,052.08-400,818,375-158,289,079.92

Finding the Fourth Proportional to 290,448,052.08, 400,818,375 and 158,289,079.92

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Solution

The fourth proportional to 290,448,052.08, 400,818,375 and 158,289,079.92 is: 218,438,964.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,448,052.08 : 400,818,375 = 158,289,079.92 : x
  2. Step 2: Convert to fraction form
    290,448,052.08/400,818,375 = 158,289,079.92/x
  3. Step 3: Cross multiply
    290,448,052.08x = 400,818,375 × 158,289,079.92
  4. Step 4: Simplify right side
    290,448,052.08x = 63,445,171,793,779,528
  5. Step 5: Solve for x
    x = 63,445,171,793,779,528/290,448,052.08
  6. Step 6: Final answer
    x = 218,438,964.69

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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.