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Finding the Fourth Proportional to 248,369.80, 372,561.10 and 90,715.72

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Solution

The fourth proportional to 248,369.80, 372,561.10 and 90,715.72 is: 136,075.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,369.80 : 372,561.10 = 90,715.72 : x
  2. Step 2: Convert to fraction form
    248,369.80/372,561.10 = 90,715.72/x
  3. Step 3: Cross multiply
    248,369.80x = 372,561.10 × 90,715.72
  4. Step 4: Simplify right side
    248,369.80x = 33,797,148,430.49
  5. Step 5: Solve for x
    x = 33,797,148,430.49/248,369.80
  6. Step 6: Final answer
    x = 136,075.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.