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Finding the Fourth Proportional to 280,314,908.10, 420,472,362.15 and 280,314,908.10

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Solution

The fourth proportional to 280,314,908.10, 420,472,362.15 and 280,314,908.10 is: 420,472,362.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,314,908.10 : 420,472,362.15 = 280,314,908.10 : x
  2. Step 2: Convert to fraction form
    280,314,908.10/420,472,362.15 = 280,314,908.10/x
  3. Step 3: Cross multiply
    280,314,908.10x = 420,472,362.15 × 280,314,908.10
  4. Step 4: Simplify right side
    280,314,908.10x = 117,864,671,554,667,168
  5. Step 5: Solve for x
    x = 117,864,671,554,667,168/280,314,908.10
  6. Step 6: Final answer
    x = 420,472,362.15

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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.