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Finding the Fourth Proportional to 613,173.40, 919,905.90 and 258,004.60

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Solution

The fourth proportional to 613,173.40, 919,905.90 and 258,004.60 is: 387,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,173.40 : 919,905.90 = 258,004.60 : x
  2. Step 2: Convert to fraction form
    613,173.40/919,905.90 = 258,004.60/x
  3. Step 3: Cross multiply
    613,173.40x = 919,905.90 × 258,004.60
  4. Step 4: Simplify right side
    613,173.40x = 237,339,953,767.14
  5. Step 5: Solve for x
    x = 237,339,953,767.14/613,173.40
  6. Step 6: Final answer
    x = 387,068.25

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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.