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Finding the Fourth Proportional to 201,208,012.40, 301,812,018.60 and 201,208,012.40

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Solution

The fourth proportional to 201,208,012.40, 301,812,018.60 and 201,208,012.40 is: 301,812,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,208,012.40 : 301,812,018.60 = 201,208,012.40 : x
  2. Step 2: Convert to fraction form
    201,208,012.40/301,812,018.60 = 201,208,012.40/x
  3. Step 3: Cross multiply
    201,208,012.40x = 301,812,018.60 × 201,208,012.40
  4. Step 4: Simplify right side
    201,208,012.40x = 60,726,996,380,937,840
  5. Step 5: Solve for x
    x = 60,726,996,380,937,840/201,208,012.40
  6. Step 6: Final answer
    x = 301,812,018.60

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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.