Home / 210,505.08-290,501.19-115,017.69

Finding the Fourth Proportional to 210,505.08, 290,501.19 and 115,017.69

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Solution

The fourth proportional to 210,505.08, 290,501.19 and 115,017.69 is: 158,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,505.08 : 290,501.19 = 115,017.69 : x
  2. Step 2: Convert to fraction form
    210,505.08/290,501.19 = 115,017.69/x
  3. Step 3: Cross multiply
    210,505.08x = 290,501.19 × 115,017.69
  4. Step 4: Simplify right side
    210,505.08x = 33,412,775,816.05
  5. Step 5: Solve for x
    x = 33,412,775,816.05/210,505.08
  6. Step 6: Final answer
    x = 158,726.70

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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.