Home / 261,893,318.81-361,421,504.86-142,822,407.71

Finding the Fourth Proportional to 261,893,318.81, 361,421,504.86 and 142,822,407.71

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Solution

The fourth proportional to 261,893,318.81, 361,421,504.86 and 142,822,407.71 is: 197,099,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,893,318.81 : 361,421,504.86 = 142,822,407.71 : x
  2. Step 2: Convert to fraction form
    261,893,318.81/361,421,504.86 = 142,822,407.71/x
  3. Step 3: Cross multiply
    261,893,318.81x = 361,421,504.86 × 142,822,407.71
  4. Step 4: Simplify right side
    261,893,318.81x = 51,619,089,522,276,672
  5. Step 5: Solve for x
    x = 51,619,089,522,276,672/261,893,318.81
  6. Step 6: Final answer
    x = 197,099,680.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.