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Finding the Fourth Proportional to 219,405.54, 302,779.68 and 118,803.54

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Solution

The fourth proportional to 219,405.54, 302,779.68 and 118,803.54 is: 163,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,405.54 : 302,779.68 = 118,803.54 : x
  2. Step 2: Convert to fraction form
    219,405.54/302,779.68 = 118,803.54/x
  3. Step 3: Cross multiply
    219,405.54x = 302,779.68 × 118,803.54
  4. Step 4: Simplify right side
    219,405.54x = 35,971,297,824.07
  5. Step 5: Solve for x
    x = 35,971,297,824.07/219,405.54
  6. Step 6: Final answer
    x = 163,948.90

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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.