Home / 318,945.56-478,419.02-299,459.40

Finding the Fourth Proportional to 318,945.56, 478,419.02 and 299,459.40

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Solution

The fourth proportional to 318,945.56, 478,419.02 and 299,459.40 is: 449,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,945.56 : 478,419.02 = 299,459.40 : x
  2. Step 2: Convert to fraction form
    318,945.56/478,419.02 = 299,459.40/x
  3. Step 3: Cross multiply
    318,945.56x = 478,419.02 × 299,459.40
  4. Step 4: Simplify right side
    318,945.56x = 143,267,072,677.79
  5. Step 5: Solve for x
    x = 143,267,072,677.79/318,945.56
  6. Step 6: Final answer
    x = 449,189.74

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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.