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Finding the Fourth Proportional to 255,222.72, 383,070.90 and 128,951.67

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Solution

The fourth proportional to 255,222.72, 383,070.90 and 128,951.67 is: 193,547.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,222.72 : 383,070.90 = 128,951.67 : x
  2. Step 2: Convert to fraction form
    255,222.72/383,070.90 = 128,951.67/x
  3. Step 3: Cross multiply
    255,222.72x = 383,070.90 × 128,951.67
  4. Step 4: Simplify right side
    255,222.72x = 49,397,632,283.40
  5. Step 5: Solve for x
    x = 49,397,632,283.40/255,222.72
  6. Step 6: Final answer
    x = 193,547.16

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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.