Home / 370,685.21-511,540.02-209,534.58

Finding the Fourth Proportional to 370,685.21, 511,540.02 and 209,534.58

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Solution

The fourth proportional to 370,685.21, 511,540.02 and 209,534.58 is: 289,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,685.21 : 511,540.02 = 209,534.58 : x
  2. Step 2: Convert to fraction form
    370,685.21/511,540.02 = 209,534.58/x
  3. Step 3: Cross multiply
    370,685.21x = 511,540.02 × 209,534.58
  4. Step 4: Simplify right side
    370,685.21x = 107,185,323,243.89
  5. Step 5: Solve for x
    x = 107,185,323,243.89/370,685.21
  6. Step 6: Final answer
    x = 289,154.58

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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.