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Finding the Fourth Proportional to 291,707.40, 437,561.10 and 289,864.20

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Solution

The fourth proportional to 291,707.40, 437,561.10 and 289,864.20 is: 434,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,707.40 : 437,561.10 = 289,864.20 : x
  2. Step 2: Convert to fraction form
    291,707.40/437,561.10 = 289,864.20/x
  3. Step 3: Cross multiply
    291,707.40x = 437,561.10 × 289,864.20
  4. Step 4: Simplify right side
    291,707.40x = 126,833,298,202.62
  5. Step 5: Solve for x
    x = 126,833,298,202.62/291,707.40
  6. Step 6: Final answer
    x = 434,796.30

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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.