Home / 210,899.60-291,041.40-115,406.26

Finding the Fourth Proportional to 210,899.60, 291,041.40 and 115,406.26

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Solution

The fourth proportional to 210,899.60, 291,041.40 and 115,406.26 is: 159,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,899.60 : 291,041.40 = 115,406.26 : x
  2. Step 2: Convert to fraction form
    210,899.60/291,041.40 = 115,406.26/x
  3. Step 3: Cross multiply
    210,899.60x = 291,041.40 × 115,406.26
  4. Step 4: Simplify right side
    210,899.60x = 33,587,999,479.16
  5. Step 5: Solve for x
    x = 33,587,999,479.16/210,899.60
  6. Step 6: Final answer
    x = 159,260.61

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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.