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Finding the Fourth Proportional to 255,498.83, 383,307.54 and 87,020.62

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Solution

The fourth proportional to 255,498.83, 383,307.54 and 87,020.62 is: 130,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,498.83 : 383,307.54 = 87,020.62 : x
  2. Step 2: Convert to fraction form
    255,498.83/383,307.54 = 87,020.62/x
  3. Step 3: Cross multiply
    255,498.83x = 383,307.54 × 87,020.62
  4. Step 4: Simplify right side
    255,498.83x = 33,355,658,430.83
  5. Step 5: Solve for x
    x = 33,355,658,430.83/255,498.83
  6. Step 6: Final answer
    x = 130,551.12

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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.