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Finding the Fourth Proportional to 221,897.34, 306,219.42 and 121,295.34

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Solution

The fourth proportional to 221,897.34, 306,219.42 and 121,295.34 is: 167,388.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,897.34 : 306,219.42 = 121,295.34 : x
  2. Step 2: Convert to fraction form
    221,897.34/306,219.42 = 121,295.34/x
  3. Step 3: Cross multiply
    221,897.34x = 306,219.42 × 121,295.34
  4. Step 4: Simplify right side
    221,897.34x = 37,142,988,663.50
  5. Step 5: Solve for x
    x = 37,142,988,663.50/221,897.34
  6. Step 6: Final answer
    x = 167,388.17

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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.