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Finding the Fourth Proportional to 536,915.80, 805,373.70 and 162,938.20

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Solution

The fourth proportional to 536,915.80, 805,373.70 and 162,938.20 is: 244,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,915.80 : 805,373.70 = 162,938.20 : x
  2. Step 2: Convert to fraction form
    536,915.80/805,373.70 = 162,938.20/x
  3. Step 3: Cross multiply
    536,915.80x = 805,373.70 × 162,938.20
  4. Step 4: Simplify right side
    536,915.80x = 131,226,141,005.34
  5. Step 5: Solve for x
    x = 131,226,141,005.34/536,915.80
  6. Step 6: Final answer
    x = 244,407.30

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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.