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Finding the Fourth Proportional to 210,477.43, 315,718.85 and 70,236.06

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Solution

The fourth proportional to 210,477.43, 315,718.85 and 70,236.06 is: 105,354.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,477.43 : 315,718.85 = 70,236.06 : x
  2. Step 2: Convert to fraction form
    210,477.43/315,718.85 = 70,236.06/x
  3. Step 3: Cross multiply
    210,477.43x = 315,718.85 × 70,236.06
  4. Step 4: Simplify right side
    210,477.43x = 22,174,848,091.73
  5. Step 5: Solve for x
    x = 22,174,848,091.73/210,477.43
  6. Step 6: Final answer
    x = 105,354.99

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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.