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Finding the Fourth Proportional to 345,444.30, 518,321.97 and 187,435.98

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Solution

The fourth proportional to 345,444.30, 518,321.97 and 187,435.98 is: 281,238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,444.30 : 518,321.97 = 187,435.98 : x
  2. Step 2: Convert to fraction form
    345,444.30/518,321.97 = 187,435.98/x
  3. Step 3: Cross multiply
    345,444.30x = 518,321.97 × 187,435.98
  4. Step 4: Simplify right side
    345,444.30x = 97,152,185,465.30
  5. Step 5: Solve for x
    x = 97,152,185,465.30/345,444.30
  6. Step 6: Final answer
    x = 281,238.35

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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.