Home / 235,784.20-353,676.30-209,979.40

Finding the Fourth Proportional to 235,784.20, 353,676.30 and 209,979.40

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Solution

The fourth proportional to 235,784.20, 353,676.30 and 209,979.40 is: 314,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,784.20 : 353,676.30 = 209,979.40 : x
  2. Step 2: Convert to fraction form
    235,784.20/353,676.30 = 209,979.40/x
  3. Step 3: Cross multiply
    235,784.20x = 353,676.30 × 209,979.40
  4. Step 4: Simplify right side
    235,784.20x = 74,264,737,268.22
  5. Step 5: Solve for x
    x = 74,264,737,268.22/235,784.20
  6. Step 6: Final answer
    x = 314,969.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.