Home / 211,827.92-317,781-69,681.20

Finding the Fourth Proportional to 211,827.92, 317,781 and 69,681.20

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Solution

The fourth proportional to 211,827.92, 317,781 and 69,681.20 is: 104,534.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,827.92 : 317,781 = 69,681.20 : x
  2. Step 2: Convert to fraction form
    211,827.92/317,781 = 69,681.20/x
  3. Step 3: Cross multiply
    211,827.92x = 317,781 × 69,681.20
  4. Step 4: Simplify right side
    211,827.92x = 22,143,361,417.20
  5. Step 5: Solve for x
    x = 22,143,361,417.20/211,827.92
  6. Step 6: Final answer
    x = 104,534.67

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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.