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Finding the Fourth Proportional to 151,715.40, 212,007.90 and 151,715.40

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Solution

The fourth proportional to 151,715.40, 212,007.90 and 151,715.40 is: 212,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,715.40 : 212,007.90 = 151,715.40 : x
  2. Step 2: Convert to fraction form
    151,715.40/212,007.90 = 151,715.40/x
  3. Step 3: Cross multiply
    151,715.40x = 212,007.90 × 151,715.40
  4. Step 4: Simplify right side
    151,715.40x = 32,164,863,351.66
  5. Step 5: Solve for x
    x = 32,164,863,351.66/151,715.40
  6. Step 6: Final answer
    x = 212,007.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.