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Finding the Fourth Proportional to 586,221.88, 808,987.62 and 317,949.88

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Solution

The fourth proportional to 586,221.88, 808,987.62 and 317,949.88 is: 438,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,221.88 : 808,987.62 = 317,949.88 : x
  2. Step 2: Convert to fraction form
    586,221.88/808,987.62 = 317,949.88/x
  3. Step 3: Cross multiply
    586,221.88x = 808,987.62 × 317,949.88
  4. Step 4: Simplify right side
    586,221.88x = 257,217,516,700.49
  5. Step 5: Solve for x
    x = 257,217,516,700.49/586,221.88
  6. Step 6: Final answer
    x = 438,771.61

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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.