Home / 218,390,850.36-301,386,810.96-129,159,285.30

Finding the Fourth Proportional to 218,390,850.36, 301,386,810.96 and 129,159,285.30

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Solution

The fourth proportional to 218,390,850.36, 301,386,810.96 and 129,159,285.30 is: 178,244,212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,390,850.36 : 301,386,810.96 = 129,159,285.30 : x
  2. Step 2: Convert to fraction form
    218,390,850.36/301,386,810.96 = 129,159,285.30/x
  3. Step 3: Cross multiply
    218,390,850.36x = 301,386,810.96 × 129,159,285.30
  4. Step 4: Simplify right side
    218,390,850.36x = 38,926,905,102,439,800
  5. Step 5: Solve for x
    x = 38,926,905,102,439,800/218,390,850.36
  6. Step 6: Final answer
    x = 178,244,212.33

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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.