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Finding the Fourth Proportional to 210,333.70, 313,890.80 and 187,895.08

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Solution

The fourth proportional to 210,333.70, 313,890.80 and 187,895.08 is: 280,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,333.70 : 313,890.80 = 187,895.08 : x
  2. Step 2: Convert to fraction form
    210,333.70/313,890.80 = 187,895.08/x
  3. Step 3: Cross multiply
    210,333.70x = 313,890.80 × 187,895.08
  4. Step 4: Simplify right side
    210,333.70x = 58,978,536,977.26
  5. Step 5: Solve for x
    x = 58,978,536,977.26/210,333.70
  6. Step 6: Final answer
    x = 280,404.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.