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Finding the Fourth Proportional to 304,955.29, 420,840.78 and 168,991.53

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Solution

The fourth proportional to 304,955.29, 420,840.78 and 168,991.53 is: 233,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,955.29 : 420,840.78 = 168,991.53 : x
  2. Step 2: Convert to fraction form
    304,955.29/420,840.78 = 168,991.53/x
  3. Step 3: Cross multiply
    304,955.29x = 420,840.78 × 168,991.53
  4. Step 4: Simplify right side
    304,955.29x = 71,118,527,298.59
  5. Step 5: Solve for x
    x = 71,118,527,298.59/304,955.29
  6. Step 6: Final answer
    x = 233,209.69

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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.