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Finding the Fourth Proportional to 369,620.82, 554,346.45 and 103,400.10

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Solution

The fourth proportional to 369,620.82, 554,346.45 and 103,400.10 is: 155,076.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,620.82 : 554,346.45 = 103,400.10 : x
  2. Step 2: Convert to fraction form
    369,620.82/554,346.45 = 103,400.10/x
  3. Step 3: Cross multiply
    369,620.82x = 554,346.45 × 103,400.10
  4. Step 4: Simplify right side
    369,620.82x = 57,319,478,364.65
  5. Step 5: Solve for x
    x = 57,319,478,364.65/369,620.82
  6. Step 6: Final answer
    x = 155,076.43

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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.