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Finding the Fourth Proportional to 575,378.55, 863,066.61 and 154,654.43

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Solution

The fourth proportional to 575,378.55, 863,066.61 and 154,654.43 is: 231,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,378.55 : 863,066.61 = 154,654.43 : x
  2. Step 2: Convert to fraction form
    575,378.55/863,066.61 = 154,654.43/x
  3. Step 3: Cross multiply
    575,378.55x = 863,066.61 × 154,654.43
  4. Step 4: Simplify right side
    575,378.55x = 133,477,070,306.25
  5. Step 5: Solve for x
    x = 133,477,070,306.25/575,378.55
  6. Step 6: Final answer
    x = 231,981.31

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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.