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Finding the Fourth Proportional to 255,390.93, 383,424.98 and 218,190.06

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Solution

The fourth proportional to 255,390.93, 383,424.98 and 218,190.06 is: 327,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,390.93 : 383,424.98 = 218,190.06 : x
  2. Step 2: Convert to fraction form
    255,390.93/383,424.98 = 218,190.06/x
  3. Step 3: Cross multiply
    255,390.93x = 383,424.98 × 218,190.06
  4. Step 4: Simplify right side
    255,390.93x = 83,659,518,300.75
  5. Step 5: Solve for x
    x = 83,659,518,300.75/255,390.93
  6. Step 6: Final answer
    x = 327,574.35

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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.