Home / 211,521.35-317,563.60-122,838.50

Finding the Fourth Proportional to 211,521.35, 317,563.60 and 122,838.50

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Solution

The fourth proportional to 211,521.35, 317,563.60 and 122,838.50 is: 184,421.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,521.35 : 317,563.60 = 122,838.50 : x
  2. Step 2: Convert to fraction form
    211,521.35/317,563.60 = 122,838.50/x
  3. Step 3: Cross multiply
    211,521.35x = 317,563.60 × 122,838.50
  4. Step 4: Simplify right side
    211,521.35x = 39,009,036,278.60
  5. Step 5: Solve for x
    x = 39,009,036,278.60/211,521.35
  6. Step 6: Final answer
    x = 184,421.27

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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.