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Finding the Fourth Proportional to 220,766,684.90, 304,644,295.80 and 121,641,885.15

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Solution

The fourth proportional to 220,766,684.90, 304,644,295.80 and 121,641,885.15 is: 167,858,236.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,766,684.90 : 304,644,295.80 = 121,641,885.15 : x
  2. Step 2: Convert to fraction form
    220,766,684.90/304,644,295.80 = 121,641,885.15/x
  3. Step 3: Cross multiply
    220,766,684.90x = 304,644,295.80 × 121,641,885.15
  4. Step 4: Simplify right side
    220,766,684.90x = 37,057,506,441,306,232
  5. Step 5: Solve for x
    x = 37,057,506,441,306,232/220,766,684.90
  6. Step 6: Final answer
    x = 167,858,236.67

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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.