Home / 210,507.08-290,503.96-115,019.70

Finding the Fourth Proportional to 210,507.08, 290,503.96 and 115,019.70

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Solution

The fourth proportional to 210,507.08, 290,503.96 and 115,019.70 is: 158,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,507.08 : 290,503.96 = 115,019.70 : x
  2. Step 2: Convert to fraction form
    210,507.08/290,503.96 = 115,019.70/x
  3. Step 3: Cross multiply
    210,507.08x = 290,503.96 × 115,019.70
  4. Step 4: Simplify right side
    210,507.08x = 33,413,678,328.01
  5. Step 5: Solve for x
    x = 33,413,678,328.01/210,507.08
  6. Step 6: Final answer
    x = 158,729.48

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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.