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Finding the Fourth Proportional to 210,054.20, 315,081.30 and 210,054.20

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Solution

The fourth proportional to 210,054.20, 315,081.30 and 210,054.20 is: 315,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,054.20 : 315,081.30 = 210,054.20 : x
  2. Step 2: Convert to fraction form
    210,054.20/315,081.30 = 210,054.20/x
  3. Step 3: Cross multiply
    210,054.20x = 315,081.30 × 210,054.20
  4. Step 4: Simplify right side
    210,054.20x = 66,184,150,406.46
  5. Step 5: Solve for x
    x = 66,184,150,406.46/210,054.20
  6. Step 6: Final answer
    x = 315,081.30

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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.