Home / 318,893,163.20-478,339,744.80-290,675,614.40

Finding the Fourth Proportional to 318,893,163.20, 478,339,744.80 and 290,675,614.40

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Solution

The fourth proportional to 318,893,163.20, 478,339,744.80 and 290,675,614.40 is: 436,013,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,893,163.20 : 478,339,744.80 = 290,675,614.40 : x
  2. Step 2: Convert to fraction form
    318,893,163.20/478,339,744.80 = 290,675,614.40/x
  3. Step 3: Cross multiply
    318,893,163.20x = 478,339,744.80 × 290,675,614.40
  4. Step 4: Simplify right side
    318,893,163.20x = 139,041,699,211,679,200
  5. Step 5: Solve for x
    x = 139,041,699,211,679,200/318,893,163.20
  6. Step 6: Final answer
    x = 436,013,421.60

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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.