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Finding the Fourth Proportional to 223,465.71, 308,386.05 and 121,490.94

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Solution

The fourth proportional to 223,465.71, 308,386.05 and 121,490.94 is: 167,659.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,465.71 : 308,386.05 = 121,490.94 : x
  2. Step 2: Convert to fraction form
    223,465.71/308,386.05 = 121,490.94/x
  3. Step 3: Cross multiply
    223,465.71x = 308,386.05 × 121,490.94
  4. Step 4: Simplify right side
    223,465.71x = 37,466,110,234.42
  5. Step 5: Solve for x
    x = 37,466,110,234.42/223,465.71
  6. Step 6: Final answer
    x = 167,659.32

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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.