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Finding the Fourth Proportional to 537,988.88, 742,390.44 and 323,138

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Solution

The fourth proportional to 537,988.88, 742,390.44 and 323,138 is: 445,909.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,988.88 : 742,390.44 = 323,138 : x
  2. Step 2: Convert to fraction form
    537,988.88/742,390.44 = 323,138/x
  3. Step 3: Cross multiply
    537,988.88x = 742,390.44 × 323,138
  4. Step 4: Simplify right side
    537,988.88x = 239,894,562,000.72
  5. Step 5: Solve for x
    x = 239,894,562,000.72/537,988.88
  6. Step 6: Final answer
    x = 445,909.89

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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.