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Finding the Fourth Proportional to 223,045.65, 307,803.17 and 121,071.04

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Solution

The fourth proportional to 223,045.65, 307,803.17 and 121,071.04 is: 167,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,045.65 : 307,803.17 = 121,071.04 : x
  2. Step 2: Convert to fraction form
    223,045.65/307,803.17 = 121,071.04/x
  3. Step 3: Cross multiply
    223,045.65x = 307,803.17 × 121,071.04
  4. Step 4: Simplify right side
    223,045.65x = 37,266,049,440.37
  5. Step 5: Solve for x
    x = 37,266,049,440.37/223,045.65
  6. Step 6: Final answer
    x = 167,078.13

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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.