Home / 438,605,420.40-657,656,188.20-131,851,551.60

Finding the Fourth Proportional to 438,605,420.40, 657,656,188.20 and 131,851,551.60

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Solution

The fourth proportional to 438,605,420.40, 657,656,188.20 and 131,851,551.60 is: 197,701,589.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,605,420.40 : 657,656,188.20 = 131,851,551.60 : x
  2. Step 2: Convert to fraction form
    438,605,420.40/657,656,188.20 = 131,851,551.60/x
  3. Step 3: Cross multiply
    438,605,420.40x = 657,656,188.20 × 131,851,551.60
  4. Step 4: Simplify right side
    438,605,420.40x = 86,712,988,833,511,616
  5. Step 5: Solve for x
    x = 86,712,988,833,511,616/438,605,420.40
  6. Step 6: Final answer
    x = 197,701,589.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.