Home / 211,128.60-291,358.26-114,332.50

Finding the Fourth Proportional to 211,128.60, 291,358.26 and 114,332.50

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Solution

The fourth proportional to 211,128.60, 291,358.26 and 114,332.50 is: 157,779.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,128.60 : 291,358.26 = 114,332.50 : x
  2. Step 2: Convert to fraction form
    211,128.60/291,358.26 = 114,332.50/x
  3. Step 3: Cross multiply
    211,128.60x = 291,358.26 × 114,332.50
  4. Step 4: Simplify right side
    211,128.60x = 33,311,718,135.53
  5. Step 5: Solve for x
    x = 33,311,718,135.53/211,128.60
  6. Step 6: Final answer
    x = 157,779.28

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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.