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Finding the Fourth Proportional to 253,905.30, 380,955.15 and 249,920.10

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Solution

The fourth proportional to 253,905.30, 380,955.15 and 249,920.10 is: 374,975.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,905.30 : 380,955.15 = 249,920.10 : x
  2. Step 2: Convert to fraction form
    253,905.30/380,955.15 = 249,920.10/x
  3. Step 3: Cross multiply
    253,905.30x = 380,955.15 × 249,920.10
  4. Step 4: Simplify right side
    253,905.30x = 95,208,349,183.52
  5. Step 5: Solve for x
    x = 95,208,349,183.52/253,905.30
  6. Step 6: Final answer
    x = 374,975.82

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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.