Home / 353,389.52-487,690.20-202,515.68

Finding the Fourth Proportional to 353,389.52, 487,690.20 and 202,515.68

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Solution

The fourth proportional to 353,389.52, 487,690.20 and 202,515.68 is: 279,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,389.52 : 487,690.20 = 202,515.68 : x
  2. Step 2: Convert to fraction form
    353,389.52/487,690.20 = 202,515.68/x
  3. Step 3: Cross multiply
    353,389.52x = 487,690.20 × 202,515.68
  4. Step 4: Simplify right side
    353,389.52x = 98,764,912,482.34
  5. Step 5: Solve for x
    x = 98,764,912,482.34/353,389.52
  6. Step 6: Final answer
    x = 279,478.89

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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.