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Finding the Fourth Proportional to 348,533.80, 521,634.30 and 306,543.40

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Solution

The fourth proportional to 348,533.80, 521,634.30 and 306,543.40 is: 458,789.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,533.80 : 521,634.30 = 306,543.40 : x
  2. Step 2: Convert to fraction form
    348,533.80/521,634.30 = 306,543.40/x
  3. Step 3: Cross multiply
    348,533.80x = 521,634.30 × 306,543.40
  4. Step 4: Simplify right side
    348,533.80x = 159,903,551,878.62
  5. Step 5: Solve for x
    x = 159,903,551,878.62/348,533.80
  6. Step 6: Final answer
    x = 458,789.22

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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.