Home / 278,938.08-385,151.76-171,558

Finding the Fourth Proportional to 278,938.08, 385,151.76 and 171,558

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Solution

The fourth proportional to 278,938.08, 385,151.76 and 171,558 is: 236,883.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,938.08 : 385,151.76 = 171,558 : x
  2. Step 2: Convert to fraction form
    278,938.08/385,151.76 = 171,558/x
  3. Step 3: Cross multiply
    278,938.08x = 385,151.76 × 171,558
  4. Step 4: Simplify right side
    278,938.08x = 66,075,865,642.08
  5. Step 5: Solve for x
    x = 66,075,865,642.08/278,938.08
  6. Step 6: Final answer
    x = 236,883.63

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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.