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Finding the Fourth Proportional to 255,707.30, 383,600.36 and 87,188.21

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Solution

The fourth proportional to 255,707.30, 383,600.36 and 87,188.21 is: 130,795.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,707.30 : 383,600.36 = 87,188.21 : x
  2. Step 2: Convert to fraction form
    255,707.30/383,600.36 = 87,188.21/x
  3. Step 3: Cross multiply
    255,707.30x = 383,600.36 × 87,188.21
  4. Step 4: Simplify right side
    255,707.30x = 33,445,426,389.81
  5. Step 5: Solve for x
    x = 33,445,426,389.81/255,707.30
  6. Step 6: Final answer
    x = 130,795.75

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1.5x scale

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.