Home / 390,936.24-585,298.55-248,428.28

Finding the Fourth Proportional to 390,936.24, 585,298.55 and 248,428.28

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Solution

The fourth proportional to 390,936.24, 585,298.55 and 248,428.28 is: 371,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,936.24 : 585,298.55 = 248,428.28 : x
  2. Step 2: Convert to fraction form
    390,936.24/585,298.55 = 248,428.28/x
  3. Step 3: Cross multiply
    390,936.24x = 585,298.55 × 248,428.28
  4. Step 4: Simplify right side
    390,936.24x = 145,404,707,894.36
  5. Step 5: Solve for x
    x = 145,404,707,894.36/390,936.24
  6. Step 6: Final answer
    x = 371,939.70

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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.