Home / 217,381,986.05-299,988,445.28-118,263,442.80

Finding the Fourth Proportional to 217,381,986.05, 299,988,445.28 and 118,263,442.80

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Solution

The fourth proportional to 217,381,986.05, 299,988,445.28 and 118,263,442.80 is: 163,204,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,381,986.05 : 299,988,445.28 = 118,263,442.80 : x
  2. Step 2: Convert to fraction form
    217,381,986.05/299,988,445.28 = 118,263,442.80/x
  3. Step 3: Cross multiply
    217,381,986.05x = 299,988,445.28 × 118,263,442.80
  4. Step 4: Simplify right side
    217,381,986.05x = 35,477,666,338,440,888
  5. Step 5: Solve for x
    x = 35,477,666,338,440,888/217,381,986.05
  6. Step 6: Final answer
    x = 163,204,260.78

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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.