Home / 397,981.22-549,224.55-216,700.79

Finding the Fourth Proportional to 397,981.22, 549,224.55 and 216,700.79

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Solution

The fourth proportional to 397,981.22, 549,224.55 and 216,700.79 is: 299,052.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,981.22 : 549,224.55 = 216,700.79 : x
  2. Step 2: Convert to fraction form
    397,981.22/549,224.55 = 216,700.79/x
  3. Step 3: Cross multiply
    397,981.22x = 549,224.55 × 216,700.79
  4. Step 4: Simplify right side
    397,981.22x = 119,017,391,126.27
  5. Step 5: Solve for x
    x = 119,017,391,126.27/397,981.22
  6. Step 6: Final answer
    x = 299,052.79

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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.