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Finding the Fourth Proportional to 354,332.21, 489,445.19 and 262,637.37

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Solution

The fourth proportional to 354,332.21, 489,445.19 and 262,637.37 is: 362,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,332.21 : 489,445.19 = 262,637.37 : x
  2. Step 2: Convert to fraction form
    354,332.21/489,445.19 = 262,637.37/x
  3. Step 3: Cross multiply
    354,332.21x = 489,445.19 × 262,637.37
  4. Step 4: Simplify right side
    354,332.21x = 128,546,596,147.56
  5. Step 5: Solve for x
    x = 128,546,596,147.56/354,332.21
  6. Step 6: Final answer
    x = 362,785.53

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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.