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Finding the Fourth Proportional to 290,995,931.16, 401,514,438.44 and 167,212,693.44

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Solution

The fourth proportional to 290,995,931.16, 401,514,438.44 and 167,212,693.44 is: 230,719,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,995,931.16 : 401,514,438.44 = 167,212,693.44 : x
  2. Step 2: Convert to fraction form
    290,995,931.16/401,514,438.44 = 167,212,693.44/x
  3. Step 3: Cross multiply
    290,995,931.16x = 401,514,438.44 × 167,212,693.44
  4. Step 4: Simplify right side
    290,995,931.16x = 67,138,310,707,019,504
  5. Step 5: Solve for x
    x = 67,138,310,707,019,504/290,995,931.16
  6. Step 6: Final answer
    x = 230,719,070.33

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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.