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Finding the Fourth Proportional to 445,818.40, 615,229.29 and 254,835.90

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Solution

The fourth proportional to 445,818.40, 615,229.29 and 254,835.90 is: 351,673.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,818.40 : 615,229.29 = 254,835.90 : x
  2. Step 2: Convert to fraction form
    445,818.40/615,229.29 = 254,835.90/x
  3. Step 3: Cross multiply
    445,818.40x = 615,229.29 × 254,835.90
  4. Step 4: Simplify right side
    445,818.40x = 156,782,509,823.51
  5. Step 5: Solve for x
    x = 156,782,509,823.51/445,818.40
  6. Step 6: Final answer
    x = 351,673.49

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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.