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Finding the Fourth Proportional to 320,417.80, 480,626.70 and 267,929.80

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Solution

The fourth proportional to 320,417.80, 480,626.70 and 267,929.80 is: 401,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,417.80 : 480,626.70 = 267,929.80 : x
  2. Step 2: Convert to fraction form
    320,417.80/480,626.70 = 267,929.80/x
  3. Step 3: Cross multiply
    320,417.80x = 480,626.70 × 267,929.80
  4. Step 4: Simplify right side
    320,417.80x = 128,774,215,605.66
  5. Step 5: Solve for x
    x = 128,774,215,605.66/320,417.80
  6. Step 6: Final answer
    x = 401,894.70

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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.