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Finding the Fourth Proportional to 281,486.92, 388,452.54 and 152,426.80

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Solution

The fourth proportional to 281,486.92, 388,452.54 and 152,426.80 is: 210,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,486.92 : 388,452.54 = 152,426.80 : x
  2. Step 2: Convert to fraction form
    281,486.92/388,452.54 = 152,426.80/x
  3. Step 3: Cross multiply
    281,486.92x = 388,452.54 × 152,426.80
  4. Step 4: Simplify right side
    281,486.92x = 59,210,577,624.07
  5. Step 5: Solve for x
    x = 59,210,577,624.07/281,486.92
  6. Step 6: Final answer
    x = 210,349.30

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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.