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Finding the Fourth Proportional to 330,574.60, 456,191.16 and 187,361.72

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Solution

The fourth proportional to 330,574.60, 456,191.16 and 187,361.72 is: 258,558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,574.60 : 456,191.16 = 187,361.72 : x
  2. Step 2: Convert to fraction form
    330,574.60/456,191.16 = 187,361.72/x
  3. Step 3: Cross multiply
    330,574.60x = 456,191.16 × 187,361.72
  4. Step 4: Simplify right side
    330,574.60x = 85,472,760,386.40
  5. Step 5: Solve for x
    x = 85,472,760,386.40/330,574.60
  6. Step 6: Final answer
    x = 258,558.16

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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.