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Finding the Fourth Proportional to 210,010.30, 315,015.45 and 157,522.30

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Solution

The fourth proportional to 210,010.30, 315,015.45 and 157,522.30 is: 236,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,010.30 : 315,015.45 = 157,522.30 : x
  2. Step 2: Convert to fraction form
    210,010.30/315,015.45 = 157,522.30/x
  3. Step 3: Cross multiply
    210,010.30x = 315,015.45 × 157,522.30
  4. Step 4: Simplify right side
    210,010.30x = 49,621,958,219.54
  5. Step 5: Solve for x
    x = 49,621,958,219.54/210,010.30
  6. Step 6: Final answer
    x = 236,283.45

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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.