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Finding the Fourth Proportional to 219,672.96, 302,880 and 185,620.80

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Solution

The fourth proportional to 219,672.96, 302,880 and 185,620.80 is: 255,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,672.96 : 302,880 = 185,620.80 : x
  2. Step 2: Convert to fraction form
    219,672.96/302,880 = 185,620.80/x
  3. Step 3: Cross multiply
    219,672.96x = 302,880 × 185,620.80
  4. Step 4: Simplify right side
    219,672.96x = 56,220,827,904
  5. Step 5: Solve for x
    x = 56,220,827,904/219,672.96
  6. Step 6: Final answer
    x = 255,929.67

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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.