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Finding the Fourth Proportional to 279,595,998.80, 419,393,998.20 and 157,151,992.40

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Solution

The fourth proportional to 279,595,998.80, 419,393,998.20 and 157,151,992.40 is: 235,727,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,595,998.80 : 419,393,998.20 = 157,151,992.40 : x
  2. Step 2: Convert to fraction form
    279,595,998.80/419,393,998.20 = 157,151,992.40/x
  3. Step 3: Cross multiply
    279,595,998.80x = 419,393,998.20 × 157,151,992.40
  4. Step 4: Simplify right side
    279,595,998.80x = 65,908,602,417,732,016
  5. Step 5: Solve for x
    x = 65,908,602,417,732,016/279,595,998.80
  6. Step 6: Final answer
    x = 235,727,988.60

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1.5x scale

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.