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Finding the Fourth Proportional to 212,051,025.60, 317,628,640.80 and 212,051,025.60

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Solution

The fourth proportional to 212,051,025.60, 317,628,640.80 and 212,051,025.60 is: 317,628,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,051,025.60 : 317,628,640.80 = 212,051,025.60 : x
  2. Step 2: Convert to fraction form
    212,051,025.60/317,628,640.80 = 212,051,025.60/x
  3. Step 3: Cross multiply
    212,051,025.60x = 317,628,640.80 × 212,051,025.60
  4. Step 4: Simplify right side
    212,051,025.60x = 67,353,479,041,574,008
  5. Step 5: Solve for x
    x = 67,353,479,041,574,008/212,051,025.60
  6. Step 6: Final answer
    x = 317,628,640.80

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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.