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Finding the Fourth Proportional to 318,395.82, 439,368.90 and 175,132.74

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Solution

The fourth proportional to 318,395.82, 439,368.90 and 175,132.74 is: 241,673.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,395.82 : 439,368.90 = 175,132.74 : x
  2. Step 2: Convert to fraction form
    318,395.82/439,368.90 = 175,132.74/x
  3. Step 3: Cross multiply
    318,395.82x = 439,368.90 × 175,132.74
  4. Step 4: Simplify right side
    318,395.82x = 76,947,879,327.79
  5. Step 5: Solve for x
    x = 76,947,879,327.79/318,395.82
  6. Step 6: Final answer
    x = 241,673.65

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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.