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Finding the Fourth Proportional to 326,123.04, 488,626.80 and 255,018.20

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Solution

The fourth proportional to 326,123.04, 488,626.80 and 255,018.20 is: 382,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,123.04 : 488,626.80 = 255,018.20 : x
  2. Step 2: Convert to fraction form
    326,123.04/488,626.80 = 255,018.20/x
  3. Step 3: Cross multiply
    326,123.04x = 488,626.80 × 255,018.20
  4. Step 4: Simplify right side
    326,123.04x = 124,608,727,007.76
  5. Step 5: Solve for x
    x = 124,608,727,007.76/326,123.04
  6. Step 6: Final answer
    x = 382,091.15

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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.