Home / 318,943.56-478,416.02-299,457.39

Finding the Fourth Proportional to 318,943.56, 478,416.02 and 299,457.39

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Solution

The fourth proportional to 318,943.56, 478,416.02 and 299,457.39 is: 449,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,943.56 : 478,416.02 = 299,457.39 : x
  2. Step 2: Convert to fraction form
    318,943.56/478,416.02 = 299,457.39/x
  3. Step 3: Cross multiply
    318,943.56x = 478,416.02 × 299,457.39
  4. Step 4: Simplify right side
    318,943.56x = 143,265,211,186.10
  5. Step 5: Solve for x
    x = 143,265,211,186.10/318,943.56
  6. Step 6: Final answer
    x = 449,186.72

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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.