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Finding the Fourth Proportional to 199,498,401.60, 299,247,602.40 and 131,417,966.40

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Solution

The fourth proportional to 199,498,401.60, 299,247,602.40 and 131,417,966.40 is: 197,126,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,498,401.60 : 299,247,602.40 = 131,417,966.40 : x
  2. Step 2: Convert to fraction form
    199,498,401.60/299,247,602.40 = 131,417,966.40/x
  3. Step 3: Cross multiply
    199,498,401.60x = 299,247,602.40 × 131,417,966.40
  4. Step 4: Simplify right side
    199,498,401.60x = 39,326,511,357,483,760
  5. Step 5: Solve for x
    x = 39,326,511,357,483,760/199,498,401.60
  6. Step 6: Final answer
    x = 197,126,949.60

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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.