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Finding the Fourth Proportional to 371,685.90, 557,550 and 105,425.37

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Solution

The fourth proportional to 371,685.90, 557,550 and 105,425.37 is: 158,144.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,685.90 : 557,550 = 105,425.37 : x
  2. Step 2: Convert to fraction form
    371,685.90/557,550 = 105,425.37/x
  3. Step 3: Cross multiply
    371,685.90x = 557,550 × 105,425.37
  4. Step 4: Simplify right side
    371,685.90x = 58,779,915,043.50
  5. Step 5: Solve for x
    x = 58,779,915,043.50/371,685.90
  6. Step 6: Final answer
    x = 158,144.05

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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.