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Finding the Fourth Proportional to 384,804.84, 531,031.36 and 215,038.94

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Solution

The fourth proportional to 384,804.84, 531,031.36 and 215,038.94 is: 296,754.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,804.84 : 531,031.36 = 215,038.94 : x
  2. Step 2: Convert to fraction form
    384,804.84/531,031.36 = 215,038.94/x
  3. Step 3: Cross multiply
    384,804.84x = 531,031.36 × 215,038.94
  4. Step 4: Simplify right side
    384,804.84x = 114,192,420,761.16
  5. Step 5: Solve for x
    x = 114,192,420,761.16/384,804.84
  6. Step 6: Final answer
    x = 296,754.12

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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.