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Finding the Fourth Proportional to 217,209,999.60, 325,814,999.40 and 125,376,994.80

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Solution

The fourth proportional to 217,209,999.60, 325,814,999.40 and 125,376,994.80 is: 188,065,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,209,999.60 : 325,814,999.40 = 125,376,994.80 : x
  2. Step 2: Convert to fraction form
    217,209,999.60/325,814,999.40 = 125,376,994.80/x
  3. Step 3: Cross multiply
    217,209,999.60x = 325,814,999.40 × 125,376,994.80
  4. Step 4: Simplify right side
    217,209,999.60x = 40,849,705,485,535,800
  5. Step 5: Solve for x
    x = 40,849,705,485,535,800/217,209,999.60
  6. Step 6: Final answer
    x = 188,065,492.20

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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.