Home / 380,648,085.35-525,294,357.73-215,635,654.85

Finding the Fourth Proportional to 380,648,085.35, 525,294,357.73 and 215,635,654.85

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Solution

The fourth proportional to 380,648,085.35, 525,294,357.73 and 215,635,654.85 is: 297,577,203.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,648,085.35 : 525,294,357.73 = 215,635,654.85 : x
  2. Step 2: Convert to fraction form
    380,648,085.35/525,294,357.73 = 215,635,654.85/x
  3. Step 3: Cross multiply
    380,648,085.35x = 525,294,357.73 × 215,635,654.85
  4. Step 4: Simplify right side
    380,648,085.35x = 113,272,192,814,953,152
  5. Step 5: Solve for x
    x = 113,272,192,814,953,152/380,648,085.35
  6. Step 6: Final answer
    x = 297,577,203.66

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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.