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Finding the Fourth Proportional to 369,987.15, 510,580.40 and 200,221.28

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Solution

The fourth proportional to 369,987.15, 510,580.40 and 200,221.28 is: 276,304.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,987.15 : 510,580.40 = 200,221.28 : x
  2. Step 2: Convert to fraction form
    369,987.15/510,580.40 = 200,221.28/x
  3. Step 3: Cross multiply
    369,987.15x = 510,580.40 × 200,221.28
  4. Step 4: Simplify right side
    369,987.15x = 102,229,059,591.58
  5. Step 5: Solve for x
    x = 102,229,059,591.58/369,987.15
  6. Step 6: Final answer
    x = 276,304.35

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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.