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Finding the Fourth Proportional to 398,437.86, 549,902.79 and 262,450.02

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Solution

The fourth proportional to 398,437.86, 549,902.79 and 262,450.02 is: 362,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,437.86 : 549,902.79 = 262,450.02 : x
  2. Step 2: Convert to fraction form
    398,437.86/549,902.79 = 262,450.02/x
  3. Step 3: Cross multiply
    398,437.86x = 549,902.79 × 262,450.02
  4. Step 4: Simplify right side
    398,437.86x = 144,321,998,233.56
  5. Step 5: Solve for x
    x = 144,321,998,233.56/398,437.86
  6. Step 6: Final answer
    x = 362,219.59

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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.