Home / 211,587.76-317,535-78,486.94

Finding the Fourth Proportional to 211,587.76, 317,535 and 78,486.94

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Solution

The fourth proportional to 211,587.76, 317,535 and 78,486.94 is: 117,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,587.76 : 317,535 = 78,486.94 : x
  2. Step 2: Convert to fraction form
    211,587.76/317,535 = 78,486.94/x
  3. Step 3: Cross multiply
    211,587.76x = 317,535 × 78,486.94
  4. Step 4: Simplify right side
    211,587.76x = 24,922,350,492.90
  5. Step 5: Solve for x
    x = 24,922,350,492.90/211,587.76
  6. Step 6: Final answer
    x = 117,787.30

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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.