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Finding the Fourth Proportional to 315,269.98, 435,083.06 and 172,037.88

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Solution

The fourth proportional to 315,269.98, 435,083.06 and 172,037.88 is: 237,418.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,269.98 : 435,083.06 = 172,037.88 : x
  2. Step 2: Convert to fraction form
    315,269.98/435,083.06 = 172,037.88/x
  3. Step 3: Cross multiply
    315,269.98x = 435,083.06 × 172,037.88
  4. Step 4: Simplify right side
    315,269.98x = 74,850,767,266.31
  5. Step 5: Solve for x
    x = 74,850,767,266.31/315,269.98
  6. Step 6: Final answer
    x = 237,418.00

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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.