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Finding the Fourth Proportional to 219,158, 302,438.40 and 118,556

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Solution

The fourth proportional to 219,158, 302,438.40 and 118,556 is: 163,607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,158 : 302,438.40 = 118,556 : x
  2. Step 2: Convert to fraction form
    219,158/302,438.40 = 118,556/x
  3. Step 3: Cross multiply
    219,158x = 302,438.40 × 118,556
  4. Step 4: Simplify right side
    219,158x = 35,855,886,950.40
  5. Step 5: Solve for x
    x = 35,855,886,950.40/219,158
  6. Step 6: Final answer
    x = 163,607.47

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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.