Home / 427,826.16-642,369.96-238,656.06

Finding the Fourth Proportional to 427,826.16, 642,369.96 and 238,656.06

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Solution

The fourth proportional to 427,826.16, 642,369.96 and 238,656.06 is: 358,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,826.16 : 642,369.96 = 238,656.06 : x
  2. Step 2: Convert to fraction form
    427,826.16/642,369.96 = 238,656.06/x
  3. Step 3: Cross multiply
    427,826.16x = 642,369.96 × 238,656.06
  4. Step 4: Simplify right side
    427,826.16x = 153,305,483,715.96
  5. Step 5: Solve for x
    x = 153,305,483,715.96/427,826.16
  6. Step 6: Final answer
    x = 358,335.93

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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.