Home / 397,981.75-549,209.33-216,693.68

Finding the Fourth Proportional to 397,981.75, 549,209.33 and 216,693.68

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Solution

The fourth proportional to 397,981.75, 549,209.33 and 216,693.68 is: 299,034.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,981.75 : 549,209.33 = 216,693.68 : x
  2. Step 2: Convert to fraction form
    397,981.75/549,209.33 = 216,693.68/x
  3. Step 3: Cross multiply
    397,981.75x = 549,209.33 × 216,693.68
  4. Step 4: Simplify right side
    397,981.75x = 119,010,190,808.03
  5. Step 5: Solve for x
    x = 119,010,190,808.03/397,981.75
  6. Step 6: Final answer
    x = 299,034.29

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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.