Home / 388,692,654.22-536,399,431.92-221,426,436.42

Finding the Fourth Proportional to 388,692,654.22, 536,399,431.92 and 221,426,436.42

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Solution

The fourth proportional to 388,692,654.22, 536,399,431.92 and 221,426,436.42 is: 305,570,515.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,692,654.22 : 536,399,431.92 = 221,426,436.42 : x
  2. Step 2: Convert to fraction form
    388,692,654.22/536,399,431.92 = 221,426,436.42/x
  3. Step 3: Cross multiply
    388,692,654.22x = 536,399,431.92 × 221,426,436.42
  4. Step 4: Simplify right side
    388,692,654.22x = 118,773,014,707,758,000
  5. Step 5: Solve for x
    x = 118,773,014,707,758,000/388,692,654.22
  6. Step 6: Final answer
    x = 305,570,515.47

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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.