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Finding the Fourth Proportional to 525,830.60, 788,940.30 and 210,513.80

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Solution

The fourth proportional to 525,830.60, 788,940.30 and 210,513.80 is: 315,848.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,830.60 : 788,940.30 = 210,513.80 : x
  2. Step 2: Convert to fraction form
    525,830.60/788,940.30 = 210,513.80/x
  3. Step 3: Cross multiply
    525,830.60x = 788,940.30 × 210,513.80
  4. Step 4: Simplify right side
    525,830.60x = 166,082,820,526.14
  5. Step 5: Solve for x
    x = 166,082,820,526.14/525,830.60
  6. Step 6: Final answer
    x = 315,848.53

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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.