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Finding the Fourth Proportional to 278,881.08, 384,916.80 and 183,396.72

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Solution

The fourth proportional to 278,881.08, 384,916.80 and 183,396.72 is: 253,127.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,881.08 : 384,916.80 = 183,396.72 : x
  2. Step 2: Convert to fraction form
    278,881.08/384,916.80 = 183,396.72/x
  3. Step 3: Cross multiply
    278,881.08x = 384,916.80 × 183,396.72
  4. Step 4: Simplify right side
    278,881.08x = 70,592,478,592.90
  5. Step 5: Solve for x
    x = 70,592,478,592.90/278,881.08
  6. Step 6: Final answer
    x = 253,127.53

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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.