Home / 318,892.03-478,338.65-299,405.86

Finding the Fourth Proportional to 318,892.03, 478,338.65 and 299,405.86

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Solution

The fourth proportional to 318,892.03, 478,338.65 and 299,405.86 is: 449,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,892.03 : 478,338.65 = 299,405.86 : x
  2. Step 2: Convert to fraction form
    318,892.03/478,338.65 = 299,405.86/x
  3. Step 3: Cross multiply
    318,892.03x = 478,338.65 × 299,405.86
  4. Step 4: Simplify right side
    318,892.03x = 143,217,390,985.77
  5. Step 5: Solve for x
    x = 143,217,390,985.77/318,892.03
  6. Step 6: Final answer
    x = 449,109.35

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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.