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Finding the Fourth Proportional to 330,386.46, 455,894.58 and 194,390.46

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Solution

The fourth proportional to 330,386.46, 455,894.58 and 194,390.46 is: 268,236.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,386.46 : 455,894.58 = 194,390.46 : x
  2. Step 2: Convert to fraction form
    330,386.46/455,894.58 = 194,390.46/x
  3. Step 3: Cross multiply
    330,386.46x = 455,894.58 × 194,390.46
  4. Step 4: Simplify right side
    330,386.46x = 88,621,557,117.71
  5. Step 5: Solve for x
    x = 88,621,557,117.71/330,386.46
  6. Step 6: Final answer
    x = 268,236.04

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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.