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Finding the Fourth Proportional to 374,313.70, 561,470.55 and 285,740.20

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Solution

The fourth proportional to 374,313.70, 561,470.55 and 285,740.20 is: 428,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,313.70 : 561,470.55 = 285,740.20 : x
  2. Step 2: Convert to fraction form
    374,313.70/561,470.55 = 285,740.20/x
  3. Step 3: Cross multiply
    374,313.70x = 561,470.55 × 285,740.20
  4. Step 4: Simplify right side
    374,313.70x = 160,434,707,251.11
  5. Step 5: Solve for x
    x = 160,434,707,251.11/374,313.70
  6. Step 6: Final answer
    x = 428,610.30

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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.