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Finding the Fourth Proportional to 490,133.52, 676,531.08 and 286,239.60

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Solution

The fourth proportional to 490,133.52, 676,531.08 and 286,239.60 is: 395,096.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,133.52 : 676,531.08 = 286,239.60 : x
  2. Step 2: Convert to fraction form
    490,133.52/676,531.08 = 286,239.60/x
  3. Step 3: Cross multiply
    490,133.52x = 676,531.08 × 286,239.60
  4. Step 4: Simplify right side
    490,133.52x = 193,649,985,726.77
  5. Step 5: Solve for x
    x = 193,649,985,726.77/490,133.52
  6. Step 6: Final answer
    x = 395,096.39

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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.