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Finding the Fourth Proportional to 260,371.56, 390,540.84 and 83,005.84

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Solution

The fourth proportional to 260,371.56, 390,540.84 and 83,005.84 is: 124,503.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,371.56 : 390,540.84 = 83,005.84 : x
  2. Step 2: Convert to fraction form
    260,371.56/390,540.84 = 83,005.84/x
  3. Step 3: Cross multiply
    260,371.56x = 390,540.84 × 83,005.84
  4. Step 4: Simplify right side
    260,371.56x = 32,417,170,478.51
  5. Step 5: Solve for x
    x = 32,417,170,478.51/260,371.56
  6. Step 6: Final answer
    x = 124,503.50

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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.