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Finding the Fourth Proportional to 281,445.71, 388,390.41 and 152,383.15

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Solution

The fourth proportional to 281,445.71, 388,390.41 and 152,383.15 is: 210,286.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,445.71 : 388,390.41 = 152,383.15 : x
  2. Step 2: Convert to fraction form
    281,445.71/388,390.41 = 152,383.15/x
  3. Step 3: Cross multiply
    281,445.71x = 388,390.41 × 152,383.15
  4. Step 4: Simplify right side
    281,445.71x = 59,184,153,134.62
  5. Step 5: Solve for x
    x = 59,184,153,134.62/281,445.71
  6. Step 6: Final answer
    x = 210,286.21

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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.