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Finding the Fourth Proportional to 318,943.44, 478,415.83 and 299,457.27

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Solution

The fourth proportional to 318,943.44, 478,415.83 and 299,457.27 is: 449,186.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,943.44 : 478,415.83 = 299,457.27 : x
  2. Step 2: Convert to fraction form
    318,943.44/478,415.83 = 299,457.27/x
  3. Step 3: Cross multiply
    318,943.44x = 478,415.83 × 299,457.27
  4. Step 4: Simplify right side
    318,943.44x = 143,265,095,235.86
  5. Step 5: Solve for x
    x = 143,265,095,235.86/318,943.44
  6. Step 6: Final answer
    x = 449,186.53

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1.5x scale

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.