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Finding the Fourth Proportional to 525,817.60, 788,920.80 and 210,500.80

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Solution

The fourth proportional to 525,817.60, 788,920.80 and 210,500.80 is: 315,829.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,817.60 : 788,920.80 = 210,500.80 : x
  2. Step 2: Convert to fraction form
    525,817.60/788,920.80 = 210,500.80/x
  3. Step 3: Cross multiply
    525,817.60x = 788,920.80 × 210,500.80
  4. Step 4: Simplify right side
    525,817.60x = 166,068,459,536.64
  5. Step 5: Solve for x
    x = 166,068,459,536.64/525,817.60
  6. Step 6: Final answer
    x = 315,829.02

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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.