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Finding the Fourth Proportional to 366,918.60, 550,377.90 and 328,427.40

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Solution

The fourth proportional to 366,918.60, 550,377.90 and 328,427.40 is: 492,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,918.60 : 550,377.90 = 328,427.40 : x
  2. Step 2: Convert to fraction form
    366,918.60/550,377.90 = 328,427.40/x
  3. Step 3: Cross multiply
    366,918.60x = 550,377.90 × 328,427.40
  4. Step 4: Simplify right side
    366,918.60x = 180,759,182,714.46
  5. Step 5: Solve for x
    x = 180,759,182,714.46/366,918.60
  6. Step 6: Final answer
    x = 492,641.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.