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Finding the Fourth Proportional to 318,389.82, 439,360.62 and 175,126.74

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Solution

The fourth proportional to 318,389.82, 439,360.62 and 175,126.74 is: 241,665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,389.82 : 439,360.62 = 175,126.74 : x
  2. Step 2: Convert to fraction form
    318,389.82/439,360.62 = 175,126.74/x
  3. Step 3: Cross multiply
    318,389.82x = 439,360.62 × 175,126.74
  4. Step 4: Simplify right side
    318,389.82x = 76,943,793,064.98
  5. Step 5: Solve for x
    x = 76,943,793,064.98/318,389.82
  6. Step 6: Final answer
    x = 241,665.37

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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.