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Finding the Fourth Proportional to 402,901.78, 556,194.60 and 255,800.52

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Solution

The fourth proportional to 402,901.78, 556,194.60 and 255,800.52 is: 353,125.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,901.78 : 556,194.60 = 255,800.52 : x
  2. Step 2: Convert to fraction form
    402,901.78/556,194.60 = 255,800.52/x
  3. Step 3: Cross multiply
    402,901.78x = 556,194.60 × 255,800.52
  4. Step 4: Simplify right side
    402,901.78x = 142,274,867,901.19
  5. Step 5: Solve for x
    x = 142,274,867,901.19/402,901.78
  6. Step 6: Final answer
    x = 353,125.44

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1.5x scale

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.