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Finding the Fourth Proportional to 525,659.60, 788,489.40 and 210,342.80

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Solution

The fourth proportional to 525,659.60, 788,489.40 and 210,342.80 is: 315,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,659.60 : 788,489.40 = 210,342.80 : x
  2. Step 2: Convert to fraction form
    525,659.60/788,489.40 = 210,342.80/x
  3. Step 3: Cross multiply
    525,659.60x = 788,489.40 × 210,342.80
  4. Step 4: Simplify right side
    525,659.60x = 165,853,068,166.32
  5. Step 5: Solve for x
    x = 165,853,068,166.32/525,659.60
  6. Step 6: Final answer
    x = 315,514.20

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Similar ratio
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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.