Home / 309,186,315.17-426,679,971.27-168,057,867.66

Finding the Fourth Proportional to 309,186,315.17, 426,679,971.27 and 168,057,867.66

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Solution

The fourth proportional to 309,186,315.17, 426,679,971.27 and 168,057,867.66 is: 231,921,409.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,186,315.17 : 426,679,971.27 = 168,057,867.66 : x
  2. Step 2: Convert to fraction form
    309,186,315.17/426,679,971.27 = 168,057,867.66/x
  3. Step 3: Cross multiply
    309,186,315.17x = 426,679,971.27 × 168,057,867.66
  4. Step 4: Simplify right side
    309,186,315.17x = 71,706,926,142,636,000
  5. Step 5: Solve for x
    x = 71,706,926,142,636,000/309,186,315.17
  6. Step 6: Final answer
    x = 231,921,409.92

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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.