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Finding the Fourth Proportional to 469,915.19, 648,484.21 and 255,055.25

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Solution

The fourth proportional to 469,915.19, 648,484.21 and 255,055.25 is: 351,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,915.19 : 648,484.21 = 255,055.25 : x
  2. Step 2: Convert to fraction form
    469,915.19/648,484.21 = 255,055.25/x
  3. Step 3: Cross multiply
    469,915.19x = 648,484.21 × 255,055.25
  4. Step 4: Simplify right side
    469,915.19x = 165,399,304,502.57
  5. Step 5: Solve for x
    x = 165,399,304,502.57/469,915.19
  6. Step 6: Final answer
    x = 351,976.93

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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.