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Finding the Fourth Proportional to 370,538.90, 511,285.56 and 215,524.52

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Solution

The fourth proportional to 370,538.90, 511,285.56 and 215,524.52 is: 297,390.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,538.90 : 511,285.56 = 215,524.52 : x
  2. Step 2: Convert to fraction form
    370,538.90/511,285.56 = 215,524.52/x
  3. Step 3: Cross multiply
    370,538.90x = 511,285.56 × 215,524.52
  4. Step 4: Simplify right side
    370,538.90x = 110,194,574,901.93
  5. Step 5: Solve for x
    x = 110,194,574,901.93/370,538.90
  6. Step 6: Final answer
    x = 297,390.03

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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.