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Finding the Fourth Proportional to 379,838.10, 524,062.77 and 218,689.01

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Solution

The fourth proportional to 379,838.10, 524,062.77 and 218,689.01 is: 301,725.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,838.10 : 524,062.77 = 218,689.01 : x
  2. Step 2: Convert to fraction form
    379,838.10/524,062.77 = 218,689.01/x
  3. Step 3: Cross multiply
    379,838.10x = 524,062.77 × 218,689.01
  4. Step 4: Simplify right side
    379,838.10x = 114,606,768,349.16
  5. Step 5: Solve for x
    x = 114,606,768,349.16/379,838.10
  6. Step 6: Final answer
    x = 301,725.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.