Home / 211,708.80-317,592.32-78,577.76

Finding the Fourth Proportional to 211,708.80, 317,592.32 and 78,577.76

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Solution

The fourth proportional to 211,708.80, 317,592.32 and 78,577.76 is: 117,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,708.80 : 317,592.32 = 78,577.76 : x
  2. Step 2: Convert to fraction form
    211,708.80/317,592.32 = 78,577.76/x
  3. Step 3: Cross multiply
    211,708.80x = 317,592.32 × 78,577.76
  4. Step 4: Simplify right side
    211,708.80x = 24,955,693,098.80
  5. Step 5: Solve for x
    x = 24,955,693,098.80/211,708.80
  6. Step 6: Final answer
    x = 117,877.45

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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.