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Finding the Fourth Proportional to 288,059.10, 431,311.05 and 288,059.10

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Solution

The fourth proportional to 288,059.10, 431,311.05 and 288,059.10 is: 431,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,059.10 : 431,311.05 = 288,059.10 : x
  2. Step 2: Convert to fraction form
    288,059.10/431,311.05 = 288,059.10/x
  3. Step 3: Cross multiply
    288,059.10x = 431,311.05 × 288,059.10
  4. Step 4: Simplify right side
    288,059.10x = 124,243,072,883.06
  5. Step 5: Solve for x
    x = 124,243,072,883.06/288,059.10
  6. Step 6: Final answer
    x = 431,311.05

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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.