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Finding the Fourth Proportional to 346,693, 478,436.34 and 187,717

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Solution

The fourth proportional to 346,693, 478,436.34 and 187,717 is: 259,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,693 : 478,436.34 = 187,717 : x
  2. Step 2: Convert to fraction form
    346,693/478,436.34 = 187,717/x
  3. Step 3: Cross multiply
    346,693x = 478,436.34 × 187,717
  4. Step 4: Simplify right side
    346,693x = 89,810,634,435.78
  5. Step 5: Solve for x
    x = 89,810,634,435.78/346,693
  6. Step 6: Final answer
    x = 259,049.46

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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.