Home / 289,678.08-434,410.56-100,090.32

Finding the Fourth Proportional to 289,678.08, 434,410.56 and 100,090.32

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Solution

The fourth proportional to 289,678.08, 434,410.56 and 100,090.32 is: 150,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,678.08 : 434,410.56 = 100,090.32 : x
  2. Step 2: Convert to fraction form
    289,678.08/434,410.56 = 100,090.32/x
  3. Step 3: Cross multiply
    289,678.08x = 434,410.56 × 100,090.32
  4. Step 4: Simplify right side
    289,678.08x = 43,480,291,961.78
  5. Step 5: Solve for x
    x = 43,480,291,961.78/289,678.08
  6. Step 6: Final answer
    x = 150,098.66

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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.