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Finding the Fourth Proportional to 305,237.57, 421,225.72 and 169,271.37

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Solution

The fourth proportional to 305,237.57, 421,225.72 and 169,271.37 is: 233,593.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,237.57 : 421,225.72 = 169,271.37 : x
  2. Step 2: Convert to fraction form
    305,237.57/421,225.72 = 169,271.37/x
  3. Step 3: Cross multiply
    305,237.57x = 421,225.72 × 169,271.37
  4. Step 4: Simplify right side
    305,237.57x = 71,301,454,280.46
  5. Step 5: Solve for x
    x = 71,301,454,280.46/305,237.57
  6. Step 6: Final answer
    x = 233,593.31

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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.