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Finding the Fourth Proportional to 371,783.57, 513,065.34 and 202,017.69

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Solution

The fourth proportional to 371,783.57, 513,065.34 and 202,017.69 is: 278,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,783.57 : 513,065.34 = 202,017.69 : x
  2. Step 2: Convert to fraction form
    371,783.57/513,065.34 = 202,017.69/x
  3. Step 3: Cross multiply
    371,783.57x = 513,065.34 × 202,017.69
  4. Step 4: Simplify right side
    371,783.57x = 103,648,274,805.87
  5. Step 5: Solve for x
    x = 103,648,274,805.87/371,783.57
  6. Step 6: Final answer
    x = 278,786.60

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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.