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Finding the Fourth Proportional to 212,544,042.70, 318,816,064.05 and 212,544,042.70

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Solution

The fourth proportional to 212,544,042.70, 318,816,064.05 and 212,544,042.70 is: 318,816,064.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,544,042.70 : 318,816,064.05 = 212,544,042.70 : x
  2. Step 2: Convert to fraction form
    212,544,042.70/318,816,064.05 = 212,544,042.70/x
  3. Step 3: Cross multiply
    212,544,042.70x = 318,816,064.05 × 212,544,042.70
  4. Step 4: Simplify right side
    212,544,042.70x = 67,762,455,130,889,136
  5. Step 5: Solve for x
    x = 67,762,455,130,889,136/212,544,042.70
  6. Step 6: Final answer
    x = 318,816,064.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.