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Finding the Fourth Proportional to 207,237.20, 310,855.80 and 57,477.20

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Solution

The fourth proportional to 207,237.20, 310,855.80 and 57,477.20 is: 86,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,237.20 : 310,855.80 = 57,477.20 : x
  2. Step 2: Convert to fraction form
    207,237.20/310,855.80 = 57,477.20/x
  3. Step 3: Cross multiply
    207,237.20x = 310,855.80 × 57,477.20
  4. Step 4: Simplify right side
    207,237.20x = 17,867,120,987.76
  5. Step 5: Solve for x
    x = 17,867,120,987.76/207,237.20
  6. Step 6: Final answer
    x = 86,215.80

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1.5x scale

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.