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Finding the Fourth Proportional to 374,633.40, 561,755.70 and 137,854.20

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Solution

The fourth proportional to 374,633.40, 561,755.70 and 137,854.20 is: 206,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,633.40 : 561,755.70 = 137,854.20 : x
  2. Step 2: Convert to fraction form
    374,633.40/561,755.70 = 137,854.20/x
  3. Step 3: Cross multiply
    374,633.40x = 561,755.70 × 137,854.20
  4. Step 4: Simplify right side
    374,633.40x = 77,440,382,618.94
  5. Step 5: Solve for x
    x = 77,440,382,618.94/374,633.40
  6. Step 6: Final answer
    x = 206,709.77

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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.