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Finding the Fourth Proportional to 298,734.80, 448,102.20 and 266,075.60

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Solution

The fourth proportional to 298,734.80, 448,102.20 and 266,075.60 is: 399,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,734.80 : 448,102.20 = 266,075.60 : x
  2. Step 2: Convert to fraction form
    298,734.80/448,102.20 = 266,075.60/x
  3. Step 3: Cross multiply
    298,734.80x = 448,102.20 × 266,075.60
  4. Step 4: Simplify right side
    298,734.80x = 119,229,061,726.32
  5. Step 5: Solve for x
    x = 119,229,061,726.32/298,734.80
  6. Step 6: Final answer
    x = 399,113.40

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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.