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Finding the Fourth Proportional to 551,125.88, 760,501.18 and 309,353.04

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Solution

The fourth proportional to 551,125.88, 760,501.18 and 309,353.04 is: 426,877.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,125.88 : 760,501.18 = 309,353.04 : x
  2. Step 2: Convert to fraction form
    551,125.88/760,501.18 = 309,353.04/x
  3. Step 3: Cross multiply
    551,125.88x = 760,501.18 × 309,353.04
  4. Step 4: Simplify right side
    551,125.88x = 235,263,351,956.59
  5. Step 5: Solve for x
    x = 235,263,351,956.59/551,125.88
  6. Step 6: Final answer
    x = 426,877.71

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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.