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Finding the Fourth Proportional to 330,215, 455,702.37 and 179,312

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Solution

The fourth proportional to 330,215, 455,702.37 and 179,312 is: 247,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,215 : 455,702.37 = 179,312 : x
  2. Step 2: Convert to fraction form
    330,215/455,702.37 = 179,312/x
  3. Step 3: Cross multiply
    330,215x = 455,702.37 × 179,312
  4. Step 4: Simplify right side
    330,215x = 81,712,903,369.44
  5. Step 5: Solve for x
    x = 81,712,903,369.44/330,215
  6. Step 6: Final answer
    x = 247,453.64

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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.