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Finding the Fourth Proportional to 291,645.40, 437,468.10 and 266,713.60

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Solution

The fourth proportional to 291,645.40, 437,468.10 and 266,713.60 is: 400,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,645.40 : 437,468.10 = 266,713.60 : x
  2. Step 2: Convert to fraction form
    291,645.40/437,468.10 = 266,713.60/x
  3. Step 3: Cross multiply
    291,645.40x = 437,468.10 × 266,713.60
  4. Step 4: Simplify right side
    291,645.40x = 116,678,691,836.16
  5. Step 5: Solve for x
    x = 116,678,691,836.16/291,645.40
  6. Step 6: Final answer
    x = 400,070.40

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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.