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Finding the Fourth Proportional to 209,951,994.80, 314,927,992.20 and 133,330,012.40

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Solution

The fourth proportional to 209,951,994.80, 314,927,992.20 and 133,330,012.40 is: 199,995,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,951,994.80 : 314,927,992.20 = 133,330,012.40 : x
  2. Step 2: Convert to fraction form
    209,951,994.80/314,927,992.20 = 133,330,012.40/x
  3. Step 3: Cross multiply
    209,951,994.80x = 314,927,992.20 × 133,330,012.40
  4. Step 4: Simplify right side
    209,951,994.80x = 41,989,353,105,133,104
  5. Step 5: Solve for x
    x = 41,989,353,105,133,104/209,951,994.80
  6. Step 6: Final answer
    x = 199,995,018.60

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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.