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Finding the Fourth Proportional to 371,780.99, 557,670.34 and 105,541.69

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Solution

The fourth proportional to 371,780.99, 557,670.34 and 105,541.69 is: 158,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,780.99 : 557,670.34 = 105,541.69 : x
  2. Step 2: Convert to fraction form
    371,780.99/557,670.34 = 105,541.69/x
  3. Step 3: Cross multiply
    371,780.99x = 557,670.34 × 105,541.69
  4. Step 4: Simplify right side
    371,780.99x = 58,857,466,830.41
  5. Step 5: Solve for x
    x = 58,857,466,830.41/371,780.99
  6. Step 6: Final answer
    x = 158,312.20

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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.