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Finding the Fourth Proportional to 330,041.32, 455,828.52 and 223,053.28

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Solution

The fourth proportional to 330,041.32, 455,828.52 and 223,053.28 is: 308,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,041.32 : 455,828.52 = 223,053.28 : x
  2. Step 2: Convert to fraction form
    330,041.32/455,828.52 = 223,053.28/x
  3. Step 3: Cross multiply
    330,041.32x = 455,828.52 × 223,053.28
  4. Step 4: Simplify right side
    330,041.32x = 101,674,046,503.55
  5. Step 5: Solve for x
    x = 101,674,046,503.55/330,041.32
  6. Step 6: Final answer
    x = 308,064.60

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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.