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Finding the Fourth Proportional to 398,283.78, 549,636.48 and 228,533.70

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Solution

The fourth proportional to 398,283.78, 549,636.48 and 228,533.70 is: 315,379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,283.78 : 549,636.48 = 228,533.70 : x
  2. Step 2: Convert to fraction form
    398,283.78/549,636.48 = 228,533.70/x
  3. Step 3: Cross multiply
    398,283.78x = 549,636.48 × 228,533.70
  4. Step 4: Simplify right side
    398,283.78x = 125,610,458,429.38
  5. Step 5: Solve for x
    x = 125,610,458,429.38/398,283.78
  6. Step 6: Final answer
    x = 315,379.30

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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.