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Finding the Fourth Proportional to 207,908.30, 311,862.45 and 207,908.30

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Solution

The fourth proportional to 207,908.30, 311,862.45 and 207,908.30 is: 311,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,908.30 : 311,862.45 = 207,908.30 : x
  2. Step 2: Convert to fraction form
    207,908.30/311,862.45 = 207,908.30/x
  3. Step 3: Cross multiply
    207,908.30x = 311,862.45 × 207,908.30
  4. Step 4: Simplify right side
    207,908.30x = 64,838,791,813.34
  5. Step 5: Solve for x
    x = 64,838,791,813.34/207,908.30
  6. Step 6: Final answer
    x = 311,862.45

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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.