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Finding the Fourth Proportional to 391,477.01, 586,795.73 and 256,490.10

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Solution

The fourth proportional to 391,477.01, 586,795.73 and 256,490.10 is: 384,460.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,477.01 : 586,795.73 = 256,490.10 : x
  2. Step 2: Convert to fraction form
    391,477.01/586,795.73 = 256,490.10/x
  3. Step 3: Cross multiply
    391,477.01x = 586,795.73 × 256,490.10
  4. Step 4: Simplify right side
    391,477.01x = 150,507,296,917.25
  5. Step 5: Solve for x
    x = 150,507,296,917.25/391,477.01
  6. Step 6: Final answer
    x = 384,460.12

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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.