Home / 318,859,374.80-478,289,062.20-203,973,640.40

Finding the Fourth Proportional to 318,859,374.80, 478,289,062.20 and 203,973,640.40

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Solution

The fourth proportional to 318,859,374.80, 478,289,062.20 and 203,973,640.40 is: 305,960,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,859,374.80 : 478,289,062.20 = 203,973,640.40 : x
  2. Step 2: Convert to fraction form
    318,859,374.80/478,289,062.20 = 203,973,640.40/x
  3. Step 3: Cross multiply
    318,859,374.80x = 478,289,062.20 × 203,973,640.40
  4. Step 4: Simplify right side
    318,859,374.80x = 97,558,361,180,436,032
  5. Step 5: Solve for x
    x = 97,558,361,180,436,032/318,859,374.80
  6. Step 6: Final answer
    x = 305,960,460.60

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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.