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Finding the Fourth Proportional to 351,273.25, 526,909.88 and 129,657.25

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Solution

The fourth proportional to 351,273.25, 526,909.88 and 129,657.25 is: 194,485.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,273.25 : 526,909.88 = 129,657.25 : x
  2. Step 2: Convert to fraction form
    351,273.25/526,909.88 = 129,657.25/x
  3. Step 3: Cross multiply
    351,273.25x = 526,909.88 × 129,657.25
  4. Step 4: Simplify right side
    351,273.25x = 68,317,686,038.63
  5. Step 5: Solve for x
    x = 68,317,686,038.63/351,273.25
  6. Step 6: Final answer
    x = 194,485.88

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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.