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Finding the Fourth Proportional to 318,583.89, 439,642.42 and 175,340.86

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Solution

The fourth proportional to 318,583.89, 439,642.42 and 175,340.86 is: 241,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,583.89 : 439,642.42 = 175,340.86 : x
  2. Step 2: Convert to fraction form
    318,583.89/439,642.42 = 175,340.86/x
  3. Step 3: Cross multiply
    318,583.89x = 439,642.42 × 175,340.86
  4. Step 4: Simplify right side
    318,583.89x = 77,087,278,477.82
  5. Step 5: Solve for x
    x = 77,087,278,477.82/318,583.89
  6. Step 6: Final answer
    x = 241,968.54

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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.