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Finding the Fourth Proportional to 223,812.04, 308,902.02 and 128,319.40

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Solution

The fourth proportional to 223,812.04, 308,902.02 and 128,319.40 is: 177,104.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,812.04 : 308,902.02 = 128,319.40 : x
  2. Step 2: Convert to fraction form
    223,812.04/308,902.02 = 128,319.40/x
  3. Step 3: Cross multiply
    223,812.04x = 308,902.02 × 128,319.40
  4. Step 4: Simplify right side
    223,812.04x = 39,638,121,865.19
  5. Step 5: Solve for x
    x = 39,638,121,865.19/223,812.04
  6. Step 6: Final answer
    x = 177,104.51

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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.