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Finding the Fourth Proportional to 496,482.40, 745,031.40 and 259,994.80

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Solution

The fourth proportional to 496,482.40, 745,031.40 and 259,994.80 is: 390,153.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,482.40 : 745,031.40 = 259,994.80 : x
  2. Step 2: Convert to fraction form
    496,482.40/745,031.40 = 259,994.80/x
  3. Step 3: Cross multiply
    496,482.40x = 745,031.40 × 259,994.80
  4. Step 4: Simplify right side
    496,482.40x = 193,704,289,836.72
  5. Step 5: Solve for x
    x = 193,704,289,836.72/496,482.40
  6. Step 6: Final answer
    x = 390,153.39

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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.