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Finding the Fourth Proportional to 223,507.40, 308,440.58 and 121,532.76

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Solution

The fourth proportional to 223,507.40, 308,440.58 and 121,532.76 is: 167,715.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,507.40 : 308,440.58 = 121,532.76 : x
  2. Step 2: Convert to fraction form
    223,507.40/308,440.58 = 121,532.76/x
  3. Step 3: Cross multiply
    223,507.40x = 308,440.58 × 121,532.76
  4. Step 4: Simplify right side
    223,507.40x = 37,485,634,375.74
  5. Step 5: Solve for x
    x = 37,485,634,375.74/223,507.40
  6. Step 6: Final answer
    x = 167,715.41

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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.