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Finding the Fourth Proportional to 612,648.48, 919,016.58 and 163,366.98

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Solution

The fourth proportional to 612,648.48, 919,016.58 and 163,366.98 is: 245,062.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,648.48 : 919,016.58 = 163,366.98 : x
  2. Step 2: Convert to fraction form
    612,648.48/919,016.58 = 163,366.98/x
  3. Step 3: Cross multiply
    612,648.48x = 919,016.58 × 163,366.98
  4. Step 4: Simplify right side
    612,648.48x = 150,136,963,244.53
  5. Step 5: Solve for x
    x = 150,136,963,244.53/612,648.48
  6. Step 6: Final answer
    x = 245,062.17

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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.