Home / 379,148.53-522,984.67-288,305.34

Finding the Fourth Proportional to 379,148.53, 522,984.67 and 288,305.34

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Solution

The fourth proportional to 379,148.53, 522,984.67 and 288,305.34 is: 397,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,148.53 : 522,984.67 = 288,305.34 : x
  2. Step 2: Convert to fraction form
    379,148.53/522,984.67 = 288,305.34/x
  3. Step 3: Cross multiply
    379,148.53x = 522,984.67 × 288,305.34
  4. Step 4: Simplify right side
    379,148.53x = 150,779,273,099.14
  5. Step 5: Solve for x
    x = 150,779,273,099.14/379,148.53
  6. Step 6: Final answer
    x = 397,678.64

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1.5x scale

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.