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Finding the Fourth Proportional to 286,452.72, 429,686.28 and 76,090.32

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Solution

The fourth proportional to 286,452.72, 429,686.28 and 76,090.32 is: 114,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,452.72 : 429,686.28 = 76,090.32 : x
  2. Step 2: Convert to fraction form
    286,452.72/429,686.28 = 76,090.32/x
  3. Step 3: Cross multiply
    286,452.72x = 429,686.28 × 76,090.32
  4. Step 4: Simplify right side
    286,452.72x = 32,694,966,544.81
  5. Step 5: Solve for x
    x = 32,694,966,544.81/286,452.72
  6. Step 6: Final answer
    x = 114,137.39

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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.