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Finding the Fourth Proportional to 415,907.55, 623,859.30 and 163,009.35

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Solution

The fourth proportional to 415,907.55, 623,859.30 and 163,009.35 is: 244,513.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,907.55 : 623,859.30 = 163,009.35 : x
  2. Step 2: Convert to fraction form
    415,907.55/623,859.30 = 163,009.35/x
  3. Step 3: Cross multiply
    415,907.55x = 623,859.30 × 163,009.35
  4. Step 4: Simplify right side
    415,907.55x = 101,694,898,984.46
  5. Step 5: Solve for x
    x = 101,694,898,984.46/415,907.55
  6. Step 6: Final answer
    x = 244,513.23

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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.