Home / 211,356.28-317,075.86-78,237.56

Finding the Fourth Proportional to 211,356.28, 317,075.86 and 78,237.56

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Solution

The fourth proportional to 211,356.28, 317,075.86 and 78,237.56 is: 117,371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,356.28 : 317,075.86 = 78,237.56 : x
  2. Step 2: Convert to fraction form
    211,356.28/317,075.86 = 78,237.56/x
  3. Step 3: Cross multiply
    211,356.28x = 317,075.86 × 78,237.56
  4. Step 4: Simplify right side
    211,356.28x = 24,807,241,621.30
  5. Step 5: Solve for x
    x = 24,807,241,621.30/211,356.28
  6. Step 6: Final answer
    x = 117,371.68

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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.