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Finding the Fourth Proportional to 208,981.61, 288,482.90 and 141,090.54

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Solution

The fourth proportional to 208,981.61, 288,482.90 and 141,090.54 is: 194,764.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,981.61 : 288,482.90 = 141,090.54 : x
  2. Step 2: Convert to fraction form
    208,981.61/288,482.90 = 141,090.54/x
  3. Step 3: Cross multiply
    208,981.61x = 288,482.90 × 141,090.54
  4. Step 4: Simplify right side
    208,981.61x = 40,702,208,494.49
  5. Step 5: Solve for x
    x = 40,702,208,494.49/208,981.61
  6. Step 6: Final answer
    x = 194,764.55

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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.