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Finding the Fourth Proportional to 402,134.84, 554,638.54 and 273,172.76

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Solution

The fourth proportional to 402,134.84, 554,638.54 and 273,172.76 is: 376,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,134.84 : 554,638.54 = 273,172.76 : x
  2. Step 2: Convert to fraction form
    402,134.84/554,638.54 = 273,172.76/x
  3. Step 3: Cross multiply
    402,134.84x = 554,638.54 × 273,172.76
  4. Step 4: Simplify right side
    402,134.84x = 151,512,140,774.17
  5. Step 5: Solve for x
    x = 151,512,140,774.17/402,134.84
  6. Step 6: Final answer
    x = 376,769.50

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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.