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Finding the Fourth Proportional to 380,251.40, 570,161.12 and 155,348.54

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Solution

The fourth proportional to 380,251.40, 570,161.12 and 155,348.54 is: 232,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,251.40 : 570,161.12 = 155,348.54 : x
  2. Step 2: Convert to fraction form
    380,251.40/570,161.12 = 155,348.54/x
  3. Step 3: Cross multiply
    380,251.40x = 570,161.12 × 155,348.54
  4. Step 4: Simplify right side
    380,251.40x = 88,573,697,556.76
  5. Step 5: Solve for x
    x = 88,573,697,556.76/380,251.40
  6. Step 6: Final answer
    x = 232,934.57

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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.