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Finding the Fourth Proportional to 350,999.20, 526,498.80 and 209,281.60

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Solution

The fourth proportional to 350,999.20, 526,498.80 and 209,281.60 is: 313,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,999.20 : 526,498.80 = 209,281.60 : x
  2. Step 2: Convert to fraction form
    350,999.20/526,498.80 = 209,281.60/x
  3. Step 3: Cross multiply
    350,999.20x = 526,498.80 × 209,281.60
  4. Step 4: Simplify right side
    350,999.20x = 110,186,511,262.08
  5. Step 5: Solve for x
    x = 110,186,511,262.08/350,999.20
  6. Step 6: Final answer
    x = 313,922.40

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1.5x scale

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.