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Finding the Fourth Proportional to 521,881.62, 720,196.64 and 295,570.86

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Solution

The fourth proportional to 521,881.62, 720,196.64 and 295,570.86 is: 407,887.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,881.62 : 720,196.64 = 295,570.86 : x
  2. Step 2: Convert to fraction form
    521,881.62/720,196.64 = 295,570.86/x
  3. Step 3: Cross multiply
    521,881.62x = 720,196.64 × 295,570.86
  4. Step 4: Simplify right side
    521,881.62x = 212,869,140,253.91
  5. Step 5: Solve for x
    x = 212,869,140,253.91/521,881.62
  6. Step 6: Final answer
    x = 407,887.79

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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.