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Finding the Fourth Proportional to 255,539.85, 383,019.08 and 155,479.47

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Solution

The fourth proportional to 255,539.85, 383,019.08 and 155,479.47 is: 233,042.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,539.85 : 383,019.08 = 155,479.47 : x
  2. Step 2: Convert to fraction form
    255,539.85/383,019.08 = 155,479.47/x
  3. Step 3: Cross multiply
    255,539.85x = 383,019.08 × 155,479.47
  4. Step 4: Simplify right side
    255,539.85x = 59,551,602,780.89
  5. Step 5: Solve for x
    x = 59,551,602,780.89/255,539.85
  6. Step 6: Final answer
    x = 233,042.33

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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.