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Finding the Fourth Proportional to 210,257.88, 315,415.98 and 60,506.70

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Solution

The fourth proportional to 210,257.88, 315,415.98 and 60,506.70 is: 90,768.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,257.88 : 315,415.98 = 60,506.70 : x
  2. Step 2: Convert to fraction form
    210,257.88/315,415.98 = 60,506.70/x
  3. Step 3: Cross multiply
    210,257.88x = 315,415.98 × 60,506.70
  4. Step 4: Simplify right side
    210,257.88x = 19,084,780,077.07
  5. Step 5: Solve for x
    x = 19,084,780,077.07/210,257.88
  6. Step 6: Final answer
    x = 90,768.44

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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.