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Finding the Fourth Proportional to 213,154.94, 319,765.22 and 70,951.44

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Solution

The fourth proportional to 213,154.94, 319,765.22 and 70,951.44 is: 106,438.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,154.94 : 319,765.22 = 70,951.44 : x
  2. Step 2: Convert to fraction form
    213,154.94/319,765.22 = 70,951.44/x
  3. Step 3: Cross multiply
    213,154.94x = 319,765.22 × 70,951.44
  4. Step 4: Simplify right side
    213,154.94x = 22,687,803,931.35
  5. Step 5: Solve for x
    x = 22,687,803,931.35/213,154.94
  6. Step 6: Final answer
    x = 106,438.09

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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.