Home / 208,981.35-288,440.19-137,368.04

Finding the Fourth Proportional to 208,981.35, 288,440.19 and 137,368.04

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Solution

The fourth proportional to 208,981.35, 288,440.19 and 137,368.04 is: 189,598.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,981.35 : 288,440.19 = 137,368.04 : x
  2. Step 2: Convert to fraction form
    208,981.35/288,440.19 = 137,368.04/x
  3. Step 3: Cross multiply
    208,981.35x = 288,440.19 × 137,368.04
  4. Step 4: Simplify right side
    208,981.35x = 39,622,462,115.33
  5. Step 5: Solve for x
    x = 39,622,462,115.33/208,981.35
  6. Step 6: Final answer
    x = 189,598.08

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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.