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Finding the Fourth Proportional to 219,312.18, 302,920.70 and 158,786.96

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Solution

The fourth proportional to 219,312.18, 302,920.70 and 158,786.96 is: 219,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,312.18 : 302,920.70 = 158,786.96 : x
  2. Step 2: Convert to fraction form
    219,312.18/302,920.70 = 158,786.96/x
  3. Step 3: Cross multiply
    219,312.18x = 302,920.70 × 158,786.96
  4. Step 4: Simplify right side
    219,312.18x = 48,099,854,765.53
  5. Step 5: Solve for x
    x = 48,099,854,765.53/219,312.18
  6. Step 6: Final answer
    x = 219,321.40

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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.