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Finding the Fourth Proportional to 290,039.30, 434,540.55 and 248,567.30

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Solution

The fourth proportional to 290,039.30, 434,540.55 and 248,567.30 is: 372,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,039.30 : 434,540.55 = 248,567.30 : x
  2. Step 2: Convert to fraction form
    290,039.30/434,540.55 = 248,567.30/x
  3. Step 3: Cross multiply
    290,039.30x = 434,540.55 × 248,567.30
  4. Step 4: Simplify right side
    290,039.30x = 108,012,571,254.02
  5. Step 5: Solve for x
    x = 108,012,571,254.02/290,039.30
  6. Step 6: Final answer
    x = 372,406.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.