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Finding the Fourth Proportional to 330,042.32, 455,829.90 and 223,054.28

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Solution

The fourth proportional to 330,042.32, 455,829.90 and 223,054.28 is: 308,065.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,042.32 : 455,829.90 = 223,054.28 : x
  2. Step 2: Convert to fraction form
    330,042.32/455,829.90 = 223,054.28/x
  3. Step 3: Cross multiply
    330,042.32x = 455,829.90 × 223,054.28
  4. Step 4: Simplify right side
    330,042.32x = 101,674,810,146.97
  5. Step 5: Solve for x
    x = 101,674,810,146.97/330,042.32
  6. Step 6: Final answer
    x = 308,065.98

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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.