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Finding the Fourth Proportional to 383,810.95, 575,715.88 and 103,328.47

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Solution

The fourth proportional to 383,810.95, 575,715.88 and 103,328.47 is: 154,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,810.95 : 575,715.88 = 103,328.47 : x
  2. Step 2: Convert to fraction form
    383,810.95/575,715.88 = 103,328.47/x
  3. Step 3: Cross multiply
    383,810.95x = 575,715.88 × 103,328.47
  4. Step 4: Simplify right side
    383,810.95x = 59,487,841,035.10
  5. Step 5: Solve for x
    x = 59,487,841,035.10/383,810.95
  6. Step 6: Final answer
    x = 154,992.56

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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.