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Finding the Fourth Proportional to 223,153.30, 308,071.65 and 172,053.91

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Solution

The fourth proportional to 223,153.30, 308,071.65 and 172,053.91 is: 237,526.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,153.30 : 308,071.65 = 172,053.91 : x
  2. Step 2: Convert to fraction form
    223,153.30/308,071.65 = 172,053.91/x
  3. Step 3: Cross multiply
    223,153.30x = 308,071.65 × 172,053.91
  4. Step 4: Simplify right side
    223,153.30x = 53,004,931,942.65
  5. Step 5: Solve for x
    x = 53,004,931,942.65/223,153.30
  6. Step 6: Final answer
    x = 237,526.99

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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.