Home / 216,975,955.45-299,451,657.32-121,632,215.42

Finding the Fourth Proportional to 216,975,955.45, 299,451,657.32 and 121,632,215.42

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Solution

The fourth proportional to 216,975,955.45, 299,451,657.32 and 121,632,215.42 is: 167,866,381.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,975,955.45 : 299,451,657.32 = 121,632,215.42 : x
  2. Step 2: Convert to fraction form
    216,975,955.45/299,451,657.32 = 121,632,215.42/x
  3. Step 3: Cross multiply
    216,975,955.45x = 299,451,657.32 × 121,632,215.42
  4. Step 4: Simplify right side
    216,975,955.45x = 36,422,968,489,829,080
  5. Step 5: Solve for x
    x = 36,422,968,489,829,080/216,975,955.45
  6. Step 6: Final answer
    x = 167,866,381.39

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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.