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Finding the Fourth Proportional to 322,336.66, 483,509.40 and 85,678.12

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Solution

The fourth proportional to 322,336.66, 483,509.40 and 85,678.12 is: 128,518.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,336.66 : 483,509.40 = 85,678.12 : x
  2. Step 2: Convert to fraction form
    322,336.66/483,509.40 = 85,678.12/x
  3. Step 3: Cross multiply
    322,336.66x = 483,509.40 × 85,678.12
  4. Step 4: Simplify right side
    322,336.66x = 41,426,176,394.33
  5. Step 5: Solve for x
    x = 41,426,176,394.33/322,336.66
  6. Step 6: Final answer
    x = 128,518.35

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1.5x scale

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.