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Finding the Fourth Proportional to 235,835.21, 325,458.44 and 128,411.13

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Solution

The fourth proportional to 235,835.21, 325,458.44 and 128,411.13 is: 177,210.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,835.21 : 325,458.44 = 128,411.13 : x
  2. Step 2: Convert to fraction form
    235,835.21/325,458.44 = 128,411.13/x
  3. Step 3: Cross multiply
    235,835.21x = 325,458.44 × 128,411.13
  4. Step 4: Simplify right side
    235,835.21x = 41,792,487,108.39
  5. Step 5: Solve for x
    x = 41,792,487,108.39/235,835.21
  6. Step 6: Final answer
    x = 177,210.55

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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.