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Finding the Fourth Proportional to 299,744.88, 447,430.62 and 261,910.50

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Solution

The fourth proportional to 299,744.88, 447,430.62 and 261,910.50 is: 390,955.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,744.88 : 447,430.62 = 261,910.50 : x
  2. Step 2: Convert to fraction form
    299,744.88/447,430.62 = 261,910.50/x
  3. Step 3: Cross multiply
    299,744.88x = 447,430.62 × 261,910.50
  4. Step 4: Simplify right side
    299,744.88x = 117,186,777,399.51
  5. Step 5: Solve for x
    x = 117,186,777,399.51/299,744.88
  6. Step 6: Final answer
    x = 390,955.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.