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Finding the Fourth Proportional to 255,428.79, 352,519.43 and 140,719.19

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Solution

The fourth proportional to 255,428.79, 352,519.43 and 140,719.19 is: 194,207.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,428.79 : 352,519.43 = 140,719.19 : x
  2. Step 2: Convert to fraction form
    255,428.79/352,519.43 = 140,719.19/x
  3. Step 3: Cross multiply
    255,428.79x = 352,519.43 × 140,719.19
  4. Step 4: Simplify right side
    255,428.79x = 49,606,248,648.86
  5. Step 5: Solve for x
    x = 49,606,248,648.86/255,428.79
  6. Step 6: Final answer
    x = 194,207.74

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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.