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Finding the Fourth Proportional to 357,352.36, 493,377.04 and 221,531.46

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Solution

The fourth proportional to 357,352.36, 493,377.04 and 221,531.46 is: 305,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,352.36 : 493,377.04 = 221,531.46 : x
  2. Step 2: Convert to fraction form
    357,352.36/493,377.04 = 221,531.46/x
  3. Step 3: Cross multiply
    357,352.36x = 493,377.04 × 221,531.46
  4. Step 4: Simplify right side
    357,352.36x = 109,298,536,001.68
  5. Step 5: Solve for x
    x = 109,298,536,001.68/357,352.36
  6. Step 6: Final answer
    x = 305,856.48

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1.5x scale

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.