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Finding the Fourth Proportional to 223,944.84, 309,084.12 and 128,483.10

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Solution

The fourth proportional to 223,944.84, 309,084.12 and 128,483.10 is: 177,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,944.84 : 309,084.12 = 128,483.10 : x
  2. Step 2: Convert to fraction form
    223,944.84/309,084.12 = 128,483.10/x
  3. Step 3: Cross multiply
    223,944.84x = 309,084.12 × 128,483.10
  4. Step 4: Simplify right side
    223,944.84x = 39,712,085,898.37
  5. Step 5: Solve for x
    x = 39,712,085,898.37/223,944.84
  6. Step 6: Final answer
    x = 177,329.77

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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.