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Finding the Fourth Proportional to 381,038.39, 571,528.37 and 141,039.63

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Solution

The fourth proportional to 381,038.39, 571,528.37 and 141,039.63 is: 211,548.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,038.39 : 571,528.37 = 141,039.63 : x
  2. Step 2: Convert to fraction form
    381,038.39/571,528.37 = 141,039.63/x
  3. Step 3: Cross multiply
    381,038.39x = 571,528.37 × 141,039.63
  4. Step 4: Simplify right side
    381,038.39x = 80,608,149,596.89
  5. Step 5: Solve for x
    x = 80,608,149,596.89/381,038.39
  6. Step 6: Final answer
    x = 211,548.63

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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.