Home / 210,879.40-291,013.38-115,386.48

Finding the Fourth Proportional to 210,879.40, 291,013.38 and 115,386.48

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Solution

The fourth proportional to 210,879.40, 291,013.38 and 115,386.48 is: 159,233.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,879.40 : 291,013.38 = 115,386.48 : x
  2. Step 2: Convert to fraction form
    210,879.40/291,013.38 = 115,386.48/x
  3. Step 3: Cross multiply
    210,879.40x = 291,013.38 × 115,386.48
  4. Step 4: Simplify right side
    210,879.40x = 33,579,009,551.10
  5. Step 5: Solve for x
    x = 33,579,009,551.10/210,879.40
  6. Step 6: Final answer
    x = 159,233.24

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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.