Home / 211,499.52-291,868.56-130,911

Finding the Fourth Proportional to 211,499.52, 291,868.56 and 130,911

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Solution

The fourth proportional to 211,499.52, 291,868.56 and 130,911 is: 180,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,499.52 : 291,868.56 = 130,911 : x
  2. Step 2: Convert to fraction form
    211,499.52/291,868.56 = 130,911/x
  3. Step 3: Cross multiply
    211,499.52x = 291,868.56 × 130,911
  4. Step 4: Simplify right side
    211,499.52x = 38,208,805,058.16
  5. Step 5: Solve for x
    x = 38,208,805,058.16/211,499.52
  6. Step 6: Final answer
    x = 180,656.70

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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.