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Finding the Fourth Proportional to 255,554.56, 383,258.01 and 87,071.15

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Solution

The fourth proportional to 255,554.56, 383,258.01 and 87,071.15 is: 130,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,554.56 : 383,258.01 = 87,071.15 : x
  2. Step 2: Convert to fraction form
    255,554.56/383,258.01 = 87,071.15/x
  3. Step 3: Cross multiply
    255,554.56x = 383,258.01 × 87,071.15
  4. Step 4: Simplify right side
    255,554.56x = 33,370,716,962.07
  5. Step 5: Solve for x
    x = 33,370,716,962.07/255,554.56
  6. Step 6: Final answer
    x = 130,581.57

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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.