Home / 209,028.18-288,462-118,381.86

Finding the Fourth Proportional to 209,028.18, 288,462 and 118,381.86

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Solution

The fourth proportional to 209,028.18, 288,462 and 118,381.86 is: 163,368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,028.18 : 288,462 = 118,381.86 : x
  2. Step 2: Convert to fraction form
    209,028.18/288,462 = 118,381.86/x
  3. Step 3: Cross multiply
    209,028.18x = 288,462 × 118,381.86
  4. Step 4: Simplify right side
    209,028.18x = 34,148,668,099.32
  5. Step 5: Solve for x
    x = 34,148,668,099.32/209,028.18
  6. Step 6: Final answer
    x = 163,368.73

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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.