Home / 309,618.04-427,277.78-173,682.20

Finding the Fourth Proportional to 309,618.04, 427,277.78 and 173,682.20

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Solution

The fourth proportional to 309,618.04, 427,277.78 and 173,682.20 is: 239,684.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,618.04 : 427,277.78 = 173,682.20 : x
  2. Step 2: Convert to fraction form
    309,618.04/427,277.78 = 173,682.20/x
  3. Step 3: Cross multiply
    309,618.04x = 427,277.78 × 173,682.20
  4. Step 4: Simplify right side
    309,618.04x = 74,210,544,841.52
  5. Step 5: Solve for x
    x = 74,210,544,841.52/309,618.04
  6. Step 6: Final answer
    x = 239,684.18

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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.