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Finding the Fourth Proportional to 223,544.29, 308,465.26 and 128,045.29

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Solution

The fourth proportional to 223,544.29, 308,465.26 and 128,045.29 is: 176,687.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,544.29 : 308,465.26 = 128,045.29 : x
  2. Step 2: Convert to fraction form
    223,544.29/308,465.26 = 128,045.29/x
  3. Step 3: Cross multiply
    223,544.29x = 308,465.26 × 128,045.29
  4. Step 4: Simplify right side
    223,544.29x = 39,497,523,671.63
  5. Step 5: Solve for x
    x = 39,497,523,671.63/223,544.29
  6. Step 6: Final answer
    x = 176,687.69

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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.