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Finding the Fourth Proportional to 210,005.49, 315,002.57 and 67,850.49

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Solution

The fourth proportional to 210,005.49, 315,002.57 and 67,850.49 is: 101,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,005.49 : 315,002.57 = 67,850.49 : x
  2. Step 2: Convert to fraction form
    210,005.49/315,002.57 = 67,850.49/x
  3. Step 3: Cross multiply
    210,005.49x = 315,002.57 × 67,850.49
  4. Step 4: Simplify right side
    210,005.49x = 21,373,078,386.51
  5. Step 5: Solve for x
    x = 21,373,078,386.51/210,005.49
  6. Step 6: Final answer
    x = 101,773.90

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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.