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Finding the Fourth Proportional to 361,360.90, 498,664.78 and 208,405.50

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Solution

The fourth proportional to 361,360.90, 498,664.78 and 208,405.50 is: 287,591.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,360.90 : 498,664.78 = 208,405.50 : x
  2. Step 2: Convert to fraction form
    361,360.90/498,664.78 = 208,405.50/x
  3. Step 3: Cross multiply
    361,360.90x = 498,664.78 × 208,405.50
  4. Step 4: Simplify right side
    361,360.90x = 103,924,482,808.29
  5. Step 5: Solve for x
    x = 103,924,482,808.29/361,360.90
  6. Step 6: Final answer
    x = 287,591.94

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1.5x scale

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.