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Finding the Fourth Proportional to 346,723, 478,477.74 and 187,747

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Solution

The fourth proportional to 346,723, 478,477.74 and 187,747 is: 259,090.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,723 : 478,477.74 = 187,747 : x
  2. Step 2: Convert to fraction form
    346,723/478,477.74 = 187,747/x
  3. Step 3: Cross multiply
    346,723x = 478,477.74 × 187,747
  4. Step 4: Simplify right side
    346,723x = 89,832,760,251.78
  5. Step 5: Solve for x
    x = 89,832,760,251.78/346,723
  6. Step 6: Final answer
    x = 259,090.86

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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.