Home / 318,893,267.20-478,339,900.80-290,675,718.40

Finding the Fourth Proportional to 318,893,267.20, 478,339,900.80 and 290,675,718.40

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Solution

The fourth proportional to 318,893,267.20, 478,339,900.80 and 290,675,718.40 is: 436,013,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,893,267.20 : 478,339,900.80 = 290,675,718.40 : x
  2. Step 2: Convert to fraction form
    318,893,267.20/478,339,900.80 = 290,675,718.40/x
  3. Step 3: Cross multiply
    318,893,267.20x = 478,339,900.80 × 290,675,718.40
  4. Step 4: Simplify right side
    318,893,267.20x = 139,041,794,304,424,720
  5. Step 5: Solve for x
    x = 139,041,794,304,424,720/318,893,267.20
  6. Step 6: Final answer
    x = 436,013,577.60

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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.