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Finding the Fourth Proportional to 310,595.12, 428,606.88 and 189,937.52

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Solution

The fourth proportional to 310,595.12, 428,606.88 and 189,937.52 is: 262,104.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,595.12 : 428,606.88 = 189,937.52 : x
  2. Step 2: Convert to fraction form
    310,595.12/428,606.88 = 189,937.52/x
  3. Step 3: Cross multiply
    310,595.12x = 428,606.88 × 189,937.52
  4. Step 4: Simplify right side
    310,595.12x = 81,408,527,842.14
  5. Step 5: Solve for x
    x = 81,408,527,842.14/310,595.12
  6. Step 6: Final answer
    x = 262,104.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.