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Finding the Fourth Proportional to 260,386.75, 359,316.70 and 145,645.48

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Solution

The fourth proportional to 260,386.75, 359,316.70 and 145,645.48 is: 200,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,386.75 : 359,316.70 = 145,645.48 : x
  2. Step 2: Convert to fraction form
    260,386.75/359,316.70 = 145,645.48/x
  3. Step 3: Cross multiply
    260,386.75x = 359,316.70 × 145,645.48
  4. Step 4: Simplify right side
    260,386.75x = 52,332,853,243.52
  5. Step 5: Solve for x
    x = 52,332,853,243.52/260,386.75
  6. Step 6: Final answer
    x = 200,981.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.