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Finding the Fourth Proportional to 260,501.25, 390,747.60 and 83,005.85

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Solution

The fourth proportional to 260,501.25, 390,747.60 and 83,005.85 is: 124,507.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,501.25 : 390,747.60 = 83,005.85 : x
  2. Step 2: Convert to fraction form
    260,501.25/390,747.60 = 83,005.85/x
  3. Step 3: Cross multiply
    260,501.25x = 390,747.60 × 83,005.85
  4. Step 4: Simplify right side
    260,501.25x = 32,434,336,673.46
  5. Step 5: Solve for x
    x = 32,434,336,673.46/260,501.25
  6. Step 6: Final answer
    x = 124,507.41

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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.