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Finding the Fourth Proportional to 207,468.80, 310,486.40 and 124,422.40

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Solution

The fourth proportional to 207,468.80, 310,486.40 and 124,422.40 is: 186,203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,468.80 : 310,486.40 = 124,422.40 : x
  2. Step 2: Convert to fraction form
    207,468.80/310,486.40 = 124,422.40/x
  3. Step 3: Cross multiply
    207,468.80x = 310,486.40 × 124,422.40
  4. Step 4: Simplify right side
    207,468.80x = 38,631,463,055.36
  5. Step 5: Solve for x
    x = 38,631,463,055.36/207,468.80
  6. Step 6: Final answer
    x = 186,203.72

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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.