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Finding the Fourth Proportional to 518,866.28, 778,412.19 and 159,038.49

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Solution

The fourth proportional to 518,866.28, 778,412.19 and 159,038.49 is: 238,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,866.28 : 778,412.19 = 159,038.49 : x
  2. Step 2: Convert to fraction form
    518,866.28/778,412.19 = 159,038.49/x
  3. Step 3: Cross multiply
    518,866.28x = 778,412.19 × 159,038.49
  4. Step 4: Simplify right side
    518,866.28x = 123,797,497,761.12
  5. Step 5: Solve for x
    x = 123,797,497,761.12/518,866.28
  6. Step 6: Final answer
    x = 238,592.30

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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.