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Finding the Fourth Proportional to 255,894.60, 383,831.04 and 87,430.08

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Solution

The fourth proportional to 255,894.60, 383,831.04 and 87,430.08 is: 131,141.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,894.60 : 383,831.04 = 87,430.08 : x
  2. Step 2: Convert to fraction form
    255,894.60/383,831.04 = 87,430.08/x
  3. Step 3: Cross multiply
    255,894.60x = 383,831.04 × 87,430.08
  4. Step 4: Simplify right side
    255,894.60x = 33,558,378,533.68
  5. Step 5: Solve for x
    x = 33,558,378,533.68/255,894.60
  6. Step 6: Final answer
    x = 131,141.41

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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.