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Finding the Fourth Proportional to 368,728.04, 508,291.80 and 300,640.52

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Solution

The fourth proportional to 368,728.04, 508,291.80 and 300,640.52 is: 414,433.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,728.04 : 508,291.80 = 300,640.52 : x
  2. Step 2: Convert to fraction form
    368,728.04/508,291.80 = 300,640.52/x
  3. Step 3: Cross multiply
    368,728.04x = 508,291.80 × 300,640.52
  4. Step 4: Simplify right side
    368,728.04x = 152,813,111,063.74
  5. Step 5: Solve for x
    x = 152,813,111,063.74/368,728.04
  6. Step 6: Final answer
    x = 414,433.12

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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.