Home / 215,291,864.40-322,985,035.80-69,732,142.80

Finding the Fourth Proportional to 215,291,864.40, 322,985,035.80 and 69,732,142.80

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Solution

The fourth proportional to 215,291,864.40, 322,985,035.80 and 69,732,142.80 is: 104,613,514.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,291,864.40 : 322,985,035.80 = 69,732,142.80 : x
  2. Step 2: Convert to fraction form
    215,291,864.40/322,985,035.80 = 69,732,142.80/x
  3. Step 3: Cross multiply
    215,291,864.40x = 322,985,035.80 × 69,732,142.80
  4. Step 4: Simplify right side
    215,291,864.40x = 22,522,438,638,668,712
  5. Step 5: Solve for x
    x = 22,522,438,638,668,712/215,291,864.40
  6. Step 6: Final answer
    x = 104,613,514.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.