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Finding the Fourth Proportional to 286,885.80, 430,134.30 and 151,972.20

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Solution

The fourth proportional to 286,885.80, 430,134.30 and 151,972.20 is: 227,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,885.80 : 430,134.30 = 151,972.20 : x
  2. Step 2: Convert to fraction form
    286,885.80/430,134.30 = 151,972.20/x
  3. Step 3: Cross multiply
    286,885.80x = 430,134.30 × 151,972.20
  4. Step 4: Simplify right side
    286,885.80x = 65,368,455,866.46
  5. Step 5: Solve for x
    x = 65,368,455,866.46/286,885.80
  6. Step 6: Final answer
    x = 227,855.32

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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.