Home / 302,938.70-455,392.20-259,636.10

Finding the Fourth Proportional to 302,938.70, 455,392.20 and 259,636.10

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Solution

The fourth proportional to 302,938.70, 455,392.20 and 259,636.10 is: 390,297.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,938.70 : 455,392.20 = 259,636.10 : x
  2. Step 2: Convert to fraction form
    302,938.70/455,392.20 = 259,636.10/x
  3. Step 3: Cross multiply
    302,938.70x = 455,392.20 × 259,636.10
  4. Step 4: Simplify right side
    302,938.70x = 118,236,254,778.42
  5. Step 5: Solve for x
    x = 118,236,254,778.42/302,938.70
  6. Step 6: Final answer
    x = 390,297.62

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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.