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Finding the Fourth Proportional to 305,276.82, 421,303.48 and 169,323.72

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Solution

The fourth proportional to 305,276.82, 421,303.48 and 169,323.72 is: 233,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,276.82 : 421,303.48 = 169,323.72 : x
  2. Step 2: Convert to fraction form
    305,276.82/421,303.48 = 169,323.72/x
  3. Step 3: Cross multiply
    305,276.82x = 421,303.48 × 169,323.72
  4. Step 4: Simplify right side
    305,276.82x = 71,336,672,482.55
  5. Step 5: Solve for x
    x = 71,336,672,482.55/305,276.82
  6. Step 6: Final answer
    x = 233,678.64

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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.