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Finding the Fourth Proportional to 200,590.66, 276,845.60 and 128,024.88

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Solution

The fourth proportional to 200,590.66, 276,845.60 and 128,024.88 is: 176,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,590.66 : 276,845.60 = 128,024.88 : x
  2. Step 2: Convert to fraction form
    200,590.66/276,845.60 = 128,024.88/x
  3. Step 3: Cross multiply
    200,590.66x = 276,845.60 × 128,024.88
  4. Step 4: Simplify right side
    200,590.66x = 35,443,124,718.53
  5. Step 5: Solve for x
    x = 35,443,124,718.53/200,590.66
  6. Step 6: Final answer
    x = 176,693.79

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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.