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Finding the Fourth Proportional to 575,421.40, 863,132.10 and 220,252.60

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Solution

The fourth proportional to 575,421.40, 863,132.10 and 220,252.60 is: 330,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,421.40 : 863,132.10 = 220,252.60 : x
  2. Step 2: Convert to fraction form
    575,421.40/863,132.10 = 220,252.60/x
  3. Step 3: Cross multiply
    575,421.40x = 863,132.10 × 220,252.60
  4. Step 4: Simplify right side
    575,421.40x = 190,107,089,168.46
  5. Step 5: Solve for x
    x = 190,107,089,168.46/575,421.40
  6. Step 6: Final answer
    x = 330,378.90

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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.