Home / 217,970,597.76-300,872,314.80-129,892,215.12

Finding the Fourth Proportional to 217,970,597.76, 300,872,314.80 and 129,892,215.12

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Solution

The fourth proportional to 217,970,597.76, 300,872,314.80 and 129,892,215.12 is: 179,294,693.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,970,597.76 : 300,872,314.80 = 129,892,215.12 : x
  2. Step 2: Convert to fraction form
    217,970,597.76/300,872,314.80 = 129,892,215.12/x
  3. Step 3: Cross multiply
    217,970,597.76x = 300,872,314.80 × 129,892,215.12
  4. Step 4: Simplify right side
    217,970,597.76x = 39,080,971,437,653,960
  5. Step 5: Solve for x
    x = 39,080,971,437,653,960/217,970,597.76
  6. Step 6: Final answer
    x = 179,294,693.13

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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.