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Finding the Fourth Proportional to 223,898.38, 308,975.32 and 121,925.05

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Solution

The fourth proportional to 223,898.38, 308,975.32 and 121,925.05 is: 168,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,898.38 : 308,975.32 = 121,925.05 : x
  2. Step 2: Convert to fraction form
    223,898.38/308,975.32 = 121,925.05/x
  3. Step 3: Cross multiply
    223,898.38x = 308,975.32 × 121,925.05
  4. Step 4: Simplify right side
    223,898.38x = 37,671,831,339.77
  5. Step 5: Solve for x
    x = 37,671,831,339.77/223,898.38
  6. Step 6: Final answer
    x = 168,254.15

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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.