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Finding the Fourth Proportional to 402,344.61, 555,004.65 and 251,179.17

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Solution

The fourth proportional to 402,344.61, 555,004.65 and 251,179.17 is: 346,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,344.61 : 555,004.65 = 251,179.17 : x
  2. Step 2: Convert to fraction form
    402,344.61/555,004.65 = 251,179.17/x
  3. Step 3: Cross multiply
    402,344.61x = 555,004.65 × 251,179.17
  4. Step 4: Simplify right side
    402,344.61x = 139,405,608,275.06
  5. Step 5: Solve for x
    x = 139,405,608,275.06/402,344.61
  6. Step 6: Final answer
    x = 346,483.10

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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.