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Finding the Fourth Proportional to 201,990.40, 302,726.40 and 155,010.40

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Solution

The fourth proportional to 201,990.40, 302,726.40 and 155,010.40 is: 232,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,990.40 : 302,726.40 = 155,010.40 : x
  2. Step 2: Convert to fraction form
    201,990.40/302,726.40 = 155,010.40/x
  3. Step 3: Cross multiply
    201,990.40x = 302,726.40 × 155,010.40
  4. Step 4: Simplify right side
    201,990.40x = 46,925,740,354.56
  5. Step 5: Solve for x
    x = 46,925,740,354.56/201,990.40
  6. Step 6: Final answer
    x = 232,316.69

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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.