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Finding the Fourth Proportional to 369,239.96, 553,810.71 and 102,978.18

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Solution

The fourth proportional to 369,239.96, 553,810.71 and 102,978.18 is: 154,453.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,239.96 : 553,810.71 = 102,978.18 : x
  2. Step 2: Convert to fraction form
    369,239.96/553,810.71 = 102,978.18/x
  3. Step 3: Cross multiply
    369,239.96x = 553,810.71 × 102,978.18
  4. Step 4: Simplify right side
    369,239.96x = 57,030,418,980.31
  5. Step 5: Solve for x
    x = 57,030,418,980.31/369,239.96
  6. Step 6: Final answer
    x = 154,453.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.