Home / 346,439.36-478,149.60-289,760.96

Finding the Fourth Proportional to 346,439.36, 478,149.60 and 289,760.96

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Solution

The fourth proportional to 346,439.36, 478,149.60 and 289,760.96 is: 399,923.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,439.36 : 478,149.60 = 289,760.96 : x
  2. Step 2: Convert to fraction form
    346,439.36/478,149.60 = 289,760.96/x
  3. Step 3: Cross multiply
    346,439.36x = 478,149.60 × 289,760.96
  4. Step 4: Simplify right side
    346,439.36x = 138,549,087,119.62
  5. Step 5: Solve for x
    x = 138,549,087,119.62/346,439.36
  6. Step 6: Final answer
    x = 399,923.05

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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.