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Finding the Fourth Proportional to 613,139.94, 919,944 and 239,192.10

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Solution

The fourth proportional to 613,139.94, 919,944 and 239,192.10 is: 358,879.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,139.94 : 919,944 = 239,192.10 : x
  2. Step 2: Convert to fraction form
    613,139.94/919,944 = 239,192.10/x
  3. Step 3: Cross multiply
    613,139.94x = 919,944 × 239,192.10
  4. Step 4: Simplify right side
    613,139.94x = 220,043,337,242.40
  5. Step 5: Solve for x
    x = 220,043,337,242.40/613,139.94
  6. Step 6: Final answer
    x = 358,879.47

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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.