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Finding the Fourth Proportional to 402,585.15, 555,335.48 and 251,419.71

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Solution

The fourth proportional to 402,585.15, 555,335.48 and 251,419.71 is: 346,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,585.15 : 555,335.48 = 251,419.71 : x
  2. Step 2: Convert to fraction form
    402,585.15/555,335.48 = 251,419.71/x
  3. Step 3: Cross multiply
    402,585.15x = 555,335.48 × 251,419.71
  4. Step 4: Simplify right side
    402,585.15x = 139,622,285,962.86
  5. Step 5: Solve for x
    x = 139,622,285,962.86/402,585.15
  6. Step 6: Final answer
    x = 346,814.30

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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.