Home / 318,345.68-439,068.08-197,418.62

Finding the Fourth Proportional to 318,345.68, 439,068.08 and 197,418.62

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Solution

The fourth proportional to 318,345.68, 439,068.08 and 197,418.62 is: 272,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,345.68 : 439,068.08 = 197,418.62 : x
  2. Step 2: Convert to fraction form
    318,345.68/439,068.08 = 197,418.62/x
  3. Step 3: Cross multiply
    318,345.68x = 439,068.08 × 197,418.62
  4. Step 4: Simplify right side
    318,345.68x = 86,680,213,452.56
  5. Step 5: Solve for x
    x = 86,680,213,452.56/318,345.68
  6. Step 6: Final answer
    x = 272,283.30

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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.