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Finding the Fourth Proportional to 338,478.63, 466,831.43 and 287,659.58

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Solution

The fourth proportional to 338,478.63, 466,831.43 and 287,659.58 is: 396,741.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,478.63 : 466,831.43 = 287,659.58 : x
  2. Step 2: Convert to fraction form
    338,478.63/466,831.43 = 287,659.58/x
  3. Step 3: Cross multiply
    338,478.63x = 466,831.43 × 287,659.58
  4. Step 4: Simplify right side
    338,478.63x = 134,288,529,312.14
  5. Step 5: Solve for x
    x = 134,288,529,312.14/338,478.63
  6. Step 6: Final answer
    x = 396,741.53

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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.