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Finding the Fourth Proportional to 418,471.66, 577,502.85 and 255,137.59

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Solution

The fourth proportional to 418,471.66, 577,502.85 and 255,137.59 is: 352,097.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,471.66 : 577,502.85 = 255,137.59 : x
  2. Step 2: Convert to fraction form
    418,471.66/577,502.85 = 255,137.59/x
  3. Step 3: Cross multiply
    418,471.66x = 577,502.85 × 255,137.59
  4. Step 4: Simplify right side
    418,471.66x = 147,342,685,367.13
  5. Step 5: Solve for x
    x = 147,342,685,367.13/418,471.66
  6. Step 6: Final answer
    x = 352,097.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.