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Finding the Fourth Proportional to 370,515.37, 511,304.53 and 209,366.93

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Solution

The fourth proportional to 370,515.37, 511,304.53 and 209,366.93 is: 288,922.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,515.37 : 511,304.53 = 209,366.93 : x
  2. Step 2: Convert to fraction form
    370,515.37/511,304.53 = 209,366.93/x
  3. Step 3: Cross multiply
    370,515.37x = 511,304.53 × 209,366.93
  4. Step 4: Simplify right side
    370,515.37x = 107,050,259,741.19
  5. Step 5: Solve for x
    x = 107,050,259,741.19/370,515.37
  6. Step 6: Final answer
    x = 288,922.59

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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.