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Finding the Fourth Proportional to 210,298.32, 315,400.32 and 60,505.20

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Solution

The fourth proportional to 210,298.32, 315,400.32 and 60,505.20 is: 90,744.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,298.32 : 315,400.32 = 60,505.20 : x
  2. Step 2: Convert to fraction form
    210,298.32/315,400.32 = 60,505.20/x
  3. Step 3: Cross multiply
    210,298.32x = 315,400.32 × 60,505.20
  4. Step 4: Simplify right side
    210,298.32x = 19,083,359,441.66
  5. Step 5: Solve for x
    x = 19,083,359,441.66/210,298.32
  6. Step 6: Final answer
    x = 90,744.23

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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.