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Finding the Fourth Proportional to 282,642.90, 389,950.74 and 175,173.72

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Solution

The fourth proportional to 282,642.90, 389,950.74 and 175,173.72 is: 241,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,642.90 : 389,950.74 = 175,173.72 : x
  2. Step 2: Convert to fraction form
    282,642.90/389,950.74 = 175,173.72/x
  3. Step 3: Cross multiply
    282,642.90x = 389,950.74 × 175,173.72
  4. Step 4: Simplify right side
    282,642.90x = 68,309,121,742.55
  5. Step 5: Solve for x
    x = 68,309,121,742.55/282,642.90
  6. Step 6: Final answer
    x = 241,679.95

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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.