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Finding the Fourth Proportional to 318,018.68, 438,876.30 and 174,783.80

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Solution

The fourth proportional to 318,018.68, 438,876.30 and 174,783.80 is: 241,207.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,018.68 : 438,876.30 = 174,783.80 : x
  2. Step 2: Convert to fraction form
    318,018.68/438,876.30 = 174,783.80/x
  3. Step 3: Cross multiply
    318,018.68x = 438,876.30 × 174,783.80
  4. Step 4: Simplify right side
    318,018.68x = 76,708,467,443.94
  5. Step 5: Solve for x
    x = 76,708,467,443.94/318,018.68
  6. Step 6: Final answer
    x = 241,207.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.