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Finding the Fourth Proportional to 346,692, 478,434.96 and 187,716

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Solution

The fourth proportional to 346,692, 478,434.96 and 187,716 is: 259,048.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,692 : 478,434.96 = 187,716 : x
  2. Step 2: Convert to fraction form
    346,692/478,434.96 = 187,716/x
  3. Step 3: Cross multiply
    346,692x = 478,434.96 × 187,716
  4. Step 4: Simplify right side
    346,692x = 89,809,896,951.36
  5. Step 5: Solve for x
    x = 89,809,896,951.36/346,692
  6. Step 6: Final answer
    x = 259,048.08

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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.