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Finding the Fourth Proportional to 398,751.95, 549,966.66 and 255,525.32

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Solution

The fourth proportional to 398,751.95, 549,966.66 and 255,525.32 is: 352,425.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,751.95 : 549,966.66 = 255,525.32 : x
  2. Step 2: Convert to fraction form
    398,751.95/549,966.66 = 255,525.32/x
  3. Step 3: Cross multiply
    398,751.95x = 549,966.66 × 255,525.32
  4. Step 4: Simplify right side
    398,751.95x = 140,530,406,785.83
  5. Step 5: Solve for x
    x = 140,530,406,785.83/398,751.95
  6. Step 6: Final answer
    x = 352,425.63

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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.