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Finding the Fourth Proportional to 255,503.04, 383,300.76 and 105,661.98

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Solution

The fourth proportional to 255,503.04, 383,300.76 and 105,661.98 is: 158,512.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,503.04 : 383,300.76 = 105,661.98 : x
  2. Step 2: Convert to fraction form
    255,503.04/383,300.76 = 105,661.98/x
  3. Step 3: Cross multiply
    255,503.04x = 383,300.76 × 105,661.98
  4. Step 4: Simplify right side
    255,503.04x = 40,500,317,237.10
  5. Step 5: Solve for x
    x = 40,500,317,237.10/255,503.04
  6. Step 6: Final answer
    x = 158,512.08

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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.