Home / 211,409.03-291,742.35-115,915.50

Finding the Fourth Proportional to 211,409.03, 291,742.35 and 115,915.50

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Solution

The fourth proportional to 211,409.03, 291,742.35 and 115,915.50 is: 159,962.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,409.03 : 291,742.35 = 115,915.50 : x
  2. Step 2: Convert to fraction form
    211,409.03/291,742.35 = 115,915.50/x
  3. Step 3: Cross multiply
    211,409.03x = 291,742.35 × 115,915.50
  4. Step 4: Simplify right side
    211,409.03x = 33,817,460,371.43
  5. Step 5: Solve for x
    x = 33,817,460,371.43/211,409.03
  6. Step 6: Final answer
    x = 159,962.23

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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.