Home / 210,519.81-290,513.91-115,024.45

Finding the Fourth Proportional to 210,519.81, 290,513.91 and 115,024.45

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Solution

The fourth proportional to 210,519.81, 290,513.91 and 115,024.45 is: 158,731.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,519.81 : 290,513.91 = 115,024.45 : x
  2. Step 2: Convert to fraction form
    210,519.81/290,513.91 = 115,024.45/x
  3. Step 3: Cross multiply
    210,519.81x = 290,513.91 × 115,024.45
  4. Step 4: Simplify right side
    210,519.81x = 33,416,202,715.10
  5. Step 5: Solve for x
    x = 33,416,202,715.10/210,519.81
  6. Step 6: Final answer
    x = 158,731.87

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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.