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Finding the Fourth Proportional to 210,401.44, 315,485.40 and 70,083.52

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Solution

The fourth proportional to 210,401.44, 315,485.40 and 70,083.52 is: 105,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,401.44 : 315,485.40 = 70,083.52 : x
  2. Step 2: Convert to fraction form
    210,401.44/315,485.40 = 70,083.52/x
  3. Step 3: Cross multiply
    210,401.44x = 315,485.40 × 70,083.52
  4. Step 4: Simplify right side
    210,401.44x = 22,110,327,340.61
  5. Step 5: Solve for x
    x = 22,110,327,340.61/210,401.44
  6. Step 6: Final answer
    x = 105,086.39

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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.