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Finding the Fourth Proportional to 370,670.52, 511,519.76 and 209,519.90

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Solution

The fourth proportional to 370,670.52, 511,519.76 and 209,519.90 is: 289,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,670.52 : 511,519.76 = 209,519.90 : x
  2. Step 2: Convert to fraction form
    370,670.52/511,519.76 = 209,519.90/x
  3. Step 3: Cross multiply
    370,670.52x = 511,519.76 × 209,519.90
  4. Step 4: Simplify right side
    370,670.52x = 107,173,568,963.22
  5. Step 5: Solve for x
    x = 107,173,568,963.22/370,670.52
  6. Step 6: Final answer
    x = 289,134.32

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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.