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Finding the Fourth Proportional to 291,483.12, 437,183.16 and 91,798.32

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Solution

The fourth proportional to 291,483.12, 437,183.16 and 91,798.32 is: 137,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,483.12 : 437,183.16 = 91,798.32 : x
  2. Step 2: Convert to fraction form
    291,483.12/437,183.16 = 91,798.32/x
  3. Step 3: Cross multiply
    291,483.12x = 437,183.16 × 91,798.32
  4. Step 4: Simplify right side
    291,483.12x = 40,132,677,434.38
  5. Step 5: Solve for x
    x = 40,132,677,434.38/291,483.12
  6. Step 6: Final answer
    x = 137,684.40

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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.