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Finding the Fourth Proportional to 138,440,399.40, 207,660,599.10 and 138,440,399.40

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Solution

The fourth proportional to 138,440,399.40, 207,660,599.10 and 138,440,399.40 is: 207,660,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,440,399.40 : 207,660,599.10 = 138,440,399.40 : x
  2. Step 2: Convert to fraction form
    138,440,399.40/207,660,599.10 = 138,440,399.40/x
  3. Step 3: Cross multiply
    138,440,399.40x = 207,660,599.10 × 138,440,399.40
  4. Step 4: Simplify right side
    138,440,399.40x = 28,748,616,279,047,280
  5. Step 5: Solve for x
    x = 28,748,616,279,047,280/138,440,399.40
  6. Step 6: Final answer
    x = 207,660,599.10

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1.5x scale

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.