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Finding the Fourth Proportional to 252,390,401.60, 378,585,602.40 and 252,390,401.60

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Solution

The fourth proportional to 252,390,401.60, 378,585,602.40 and 252,390,401.60 is: 378,585,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,390,401.60 : 378,585,602.40 = 252,390,401.60 : x
  2. Step 2: Convert to fraction form
    252,390,401.60/378,585,602.40 = 252,390,401.60/x
  3. Step 3: Cross multiply
    252,390,401.60x = 378,585,602.40 × 252,390,401.60
  4. Step 4: Simplify right side
    252,390,401.60x = 95,551,372,229,713,920
  5. Step 5: Solve for x
    x = 95,551,372,229,713,920/252,390,401.60
  6. Step 6: Final answer
    x = 378,585,602.40

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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.