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Finding the Fourth Proportional to 312,303.68, 430,976.16 and 169,060.04

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Solution

The fourth proportional to 312,303.68, 430,976.16 and 169,060.04 is: 233,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,303.68 : 430,976.16 = 169,060.04 : x
  2. Step 2: Convert to fraction form
    312,303.68/430,976.16 = 169,060.04/x
  3. Step 3: Cross multiply
    312,303.68x = 430,976.16 × 169,060.04
  4. Step 4: Simplify right side
    312,303.68x = 72,860,846,848.65
  5. Step 5: Solve for x
    x = 72,860,846,848.65/312,303.68
  6. Step 6: Final answer
    x = 233,301.28

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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.