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Finding the Fourth Proportional to 377,423.90, 521,037.86 and 291,189.27

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Solution

The fourth proportional to 377,423.90, 521,037.86 and 291,189.27 is: 401,990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,423.90 : 521,037.86 = 291,189.27 : x
  2. Step 2: Convert to fraction form
    377,423.90/521,037.86 = 291,189.27/x
  3. Step 3: Cross multiply
    377,423.90x = 521,037.86 × 291,189.27
  4. Step 4: Simplify right side
    377,423.90x = 151,720,632,639.82
  5. Step 5: Solve for x
    x = 151,720,632,639.82/377,423.90
  6. Step 6: Final answer
    x = 401,990.00

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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.