Home / 211,712.00-317,326.41-85,271.28

Finding the Fourth Proportional to 211,712.00, 317,326.41 and 85,271.28

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Solution

The fourth proportional to 211,712.00, 317,326.41 and 85,271.28 is: 127,809.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,712.00 : 317,326.41 = 85,271.28 : x
  2. Step 2: Convert to fraction form
    211,712.00/317,326.41 = 85,271.28/x
  3. Step 3: Cross multiply
    211,712.00x = 317,326.41 × 85,271.28
  4. Step 4: Simplify right side
    211,712.00x = 27,058,829,753.49
  5. Step 5: Solve for x
    x = 27,058,829,753.49/211,712.00
  6. Step 6: Final answer
    x = 127,809.62

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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.