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Finding the Fourth Proportional to 242,903,463.60, 364,355,195.40 and 70,385,905.20

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Solution

The fourth proportional to 242,903,463.60, 364,355,195.40 and 70,385,905.20 is: 105,578,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,903,463.60 : 364,355,195.40 = 70,385,905.20 : x
  2. Step 2: Convert to fraction form
    242,903,463.60/364,355,195.40 = 70,385,905.20/x
  3. Step 3: Cross multiply
    242,903,463.60x = 364,355,195.40 × 70,385,905.20
  4. Step 4: Simplify right side
    242,903,463.60x = 25,645,470,242,551,876
  5. Step 5: Solve for x
    x = 25,645,470,242,551,876/242,903,463.60
  6. Step 6: Final answer
    x = 105,578,857.80

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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.