Home / 281,306.79-421,914.69-103,897.35

Finding the Fourth Proportional to 281,306.79, 421,914.69 and 103,897.35

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Solution

The fourth proportional to 281,306.79, 421,914.69 and 103,897.35 is: 155,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,306.79 : 421,914.69 = 103,897.35 : x
  2. Step 2: Convert to fraction form
    281,306.79/421,914.69 = 103,897.35/x
  3. Step 3: Cross multiply
    281,306.79x = 421,914.69 × 103,897.35
  4. Step 4: Simplify right side
    281,306.79x = 43,835,818,217.07
  5. Step 5: Solve for x
    x = 43,835,818,217.07/281,306.79
  6. Step 6: Final answer
    x = 155,829.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.