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Finding the Fourth Proportional to 286,903.80, 430,161.30 and 151,990.20

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Solution

The fourth proportional to 286,903.80, 430,161.30 and 151,990.20 is: 227,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,903.80 : 430,161.30 = 151,990.20 : x
  2. Step 2: Convert to fraction form
    286,903.80/430,161.30 = 151,990.20/x
  3. Step 3: Cross multiply
    286,903.80x = 430,161.30 × 151,990.20
  4. Step 4: Simplify right side
    286,903.80x = 65,380,302,019.26
  5. Step 5: Solve for x
    x = 65,380,302,019.26/286,903.80
  6. Step 6: Final answer
    x = 227,882.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.