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Finding the Fourth Proportional to 385,294.38, 531,746.26 and 221,956.52

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Solution

The fourth proportional to 385,294.38, 531,746.26 and 221,956.52 is: 306,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,294.38 : 531,746.26 = 221,956.52 : x
  2. Step 2: Convert to fraction form
    385,294.38/531,746.26 = 221,956.52/x
  3. Step 3: Cross multiply
    385,294.38x = 531,746.26 × 221,956.52
  4. Step 4: Simplify right side
    385,294.38x = 118,024,549,392.62
  5. Step 5: Solve for x
    x = 118,024,549,392.62/385,294.38
  6. Step 6: Final answer
    x = 306,323.05

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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.