Home / 211,522.56-316,955.79-122,555.40

Finding the Fourth Proportional to 211,522.56, 316,955.79 and 122,555.40

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Solution

The fourth proportional to 211,522.56, 316,955.79 and 122,555.40 is: 183,643.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,522.56 : 316,955.79 = 122,555.40 : x
  2. Step 2: Convert to fraction form
    211,522.56/316,955.79 = 122,555.40/x
  3. Step 3: Cross multiply
    211,522.56x = 316,955.79 × 122,555.40
  4. Step 4: Simplify right side
    211,522.56x = 38,844,643,625.77
  5. Step 5: Solve for x
    x = 38,844,643,625.77/211,522.56
  6. Step 6: Final answer
    x = 183,643.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.