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Finding the Fourth Proportional to 300,135.78, 450,090.68 and 122,547.74

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Solution

The fourth proportional to 300,135.78, 450,090.68 and 122,547.74 is: 183,775.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,135.78 : 450,090.68 = 122,547.74 : x
  2. Step 2: Convert to fraction form
    300,135.78/450,090.68 = 122,547.74/x
  3. Step 3: Cross multiply
    300,135.78x = 450,090.68 × 122,547.74
  4. Step 4: Simplify right side
    300,135.78x = 55,157,592,765.87
  5. Step 5: Solve for x
    x = 55,157,592,765.87/300,135.78
  6. Step 6: Final answer
    x = 183,775.47

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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.