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Finding the Fourth Proportional to 525,903.60, 789,373.80 and 259,964.40

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Solution

The fourth proportional to 525,903.60, 789,373.80 and 259,964.40 is: 390,202.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,903.60 : 789,373.80 = 259,964.40 : x
  2. Step 2: Convert to fraction form
    525,903.60/789,373.80 = 259,964.40/x
  3. Step 3: Cross multiply
    525,903.60x = 789,373.80 × 259,964.40
  4. Step 4: Simplify right side
    525,903.60x = 205,209,086,292.72
  5. Step 5: Solve for x
    x = 205,209,086,292.72/525,903.60
  6. Step 6: Final answer
    x = 390,202.86

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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.