Home / 210,421.72-290,377.29-114,928.75

Finding the Fourth Proportional to 210,421.72, 290,377.29 and 114,928.75

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Solution

The fourth proportional to 210,421.72, 290,377.29 and 114,928.75 is: 158,599.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,421.72 : 290,377.29 = 114,928.75 : x
  2. Step 2: Convert to fraction form
    210,421.72/290,377.29 = 114,928.75/x
  3. Step 3: Cross multiply
    210,421.72x = 290,377.29 × 114,928.75
  4. Step 4: Simplify right side
    210,421.72x = 33,372,698,968.09
  5. Step 5: Solve for x
    x = 33,372,698,968.09/210,421.72
  6. Step 6: Final answer
    x = 158,599.12

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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.