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Finding the Fourth Proportional to 380,649.18, 525,275.19 and 210,873.18

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Solution

The fourth proportional to 380,649.18, 525,275.19 and 210,873.18 is: 290,993.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,649.18 : 525,275.19 = 210,873.18 : x
  2. Step 2: Convert to fraction form
    380,649.18/525,275.19 = 210,873.18/x
  3. Step 3: Cross multiply
    380,649.18x = 525,275.19 × 210,873.18
  4. Step 4: Simplify right side
    380,649.18x = 110,766,449,690.40
  5. Step 5: Solve for x
    x = 110,766,449,690.40/380,649.18
  6. Step 6: Final answer
    x = 290,993.53

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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.