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Finding the Fourth Proportional to 348,705.84, 481,030.02 and 287,921.82

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Solution

The fourth proportional to 348,705.84, 481,030.02 and 287,921.82 is: 397,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,705.84 : 481,030.02 = 287,921.82 : x
  2. Step 2: Convert to fraction form
    348,705.84/481,030.02 = 287,921.82/x
  3. Step 3: Cross multiply
    348,705.84x = 481,030.02 × 287,921.82
  4. Step 4: Simplify right side
    348,705.84x = 138,499,038,833.04
  5. Step 5: Solve for x
    x = 138,499,038,833.04/348,705.84
  6. Step 6: Final answer
    x = 397,180.15

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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.