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Finding the Fourth Proportional to 265,740,325.20, 398,610,487.80 and 265,740,325.20

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Solution

The fourth proportional to 265,740,325.20, 398,610,487.80 and 265,740,325.20 is: 398,610,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,740,325.20 : 398,610,487.80 = 265,740,325.20 : x
  2. Step 2: Convert to fraction form
    265,740,325.20/398,610,487.80 = 265,740,325.20/x
  3. Step 3: Cross multiply
    265,740,325.20x = 398,610,487.80 × 265,740,325.20
  4. Step 4: Simplify right side
    265,740,325.20x = 105,926,880,656,102,624
  5. Step 5: Solve for x
    x = 105,926,880,656,102,624/265,740,325.20
  6. Step 6: Final answer
    x = 398,610,487.80

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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.