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Finding the Fourth Proportional to 268,417.56, 370,420.80 and 147,563.88

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Solution

The fourth proportional to 268,417.56, 370,420.80 and 147,563.88 is: 203,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,417.56 : 370,420.80 = 147,563.88 : x
  2. Step 2: Convert to fraction form
    268,417.56/370,420.80 = 147,563.88/x
  3. Step 3: Cross multiply
    268,417.56x = 370,420.80 × 147,563.88
  4. Step 4: Simplify right side
    268,417.56x = 54,660,730,480.70
  5. Step 5: Solve for x
    x = 54,660,730,480.70/268,417.56
  6. Step 6: Final answer
    x = 203,640.67

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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.