Home / 397,977.49-549,218.78-216,699.33

Finding the Fourth Proportional to 397,977.49, 549,218.78 and 216,699.33

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Solution

The fourth proportional to 397,977.49, 549,218.78 and 216,699.33 is: 299,050.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,977.49 : 549,218.78 = 216,699.33 : x
  2. Step 2: Convert to fraction form
    397,977.49/549,218.78 = 216,699.33/x
  3. Step 3: Cross multiply
    397,977.49x = 549,218.78 × 216,699.33
  4. Step 4: Simplify right side
    397,977.49x = 119,015,343,438.11
  5. Step 5: Solve for x
    x = 119,015,343,438.11/397,977.49
  6. Step 6: Final answer
    x = 299,050.44

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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.