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Finding the Fourth Proportional to 371,328.56, 512,444.88 and 218,339.12

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Solution

The fourth proportional to 371,328.56, 512,444.88 and 218,339.12 is: 301,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,328.56 : 512,444.88 = 218,339.12 : x
  2. Step 2: Convert to fraction form
    371,328.56/512,444.88 = 218,339.12/x
  3. Step 3: Cross multiply
    371,328.56x = 512,444.88 × 218,339.12
  4. Step 4: Simplify right side
    371,328.56x = 111,886,764,147.71
  5. Step 5: Solve for x
    x = 111,886,764,147.71/371,328.56
  6. Step 6: Final answer
    x = 301,314.73

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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.