Home / 391,641.75-540,466.16-221,887.35

Finding the Fourth Proportional to 391,641.75, 540,466.16 and 221,887.35

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Solution

The fourth proportional to 391,641.75, 540,466.16 and 221,887.35 is: 306,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,641.75 : 540,466.16 = 221,887.35 : x
  2. Step 2: Convert to fraction form
    391,641.75/540,466.16 = 221,887.35/x
  3. Step 3: Cross multiply
    391,641.75x = 540,466.16 × 221,887.35
  4. Step 4: Simplify right side
    391,641.75x = 119,922,602,897.64
  5. Step 5: Solve for x
    x = 119,922,602,897.64/391,641.75
  6. Step 6: Final answer
    x = 306,204.85

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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.