Home / 210,528.12-290,520.24-115,038.12

Finding the Fourth Proportional to 210,528.12, 290,520.24 and 115,038.12

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Solution

The fourth proportional to 210,528.12, 290,520.24 and 115,038.12 is: 158,747.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,528.12 : 290,520.24 = 115,038.12 : x
  2. Step 2: Convert to fraction form
    210,528.12/290,520.24 = 115,038.12/x
  3. Step 3: Cross multiply
    210,528.12x = 290,520.24 × 115,038.12
  4. Step 4: Simplify right side
    210,528.12x = 33,420,902,231.55
  5. Step 5: Solve for x
    x = 33,420,902,231.55/210,528.12
  6. Step 6: Final answer
    x = 158,747.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.