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Finding the Fourth Proportional to 243,363.40, 365,045.10 and 172,504.60

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Solution

The fourth proportional to 243,363.40, 365,045.10 and 172,504.60 is: 258,756.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,363.40 : 365,045.10 = 172,504.60 : x
  2. Step 2: Convert to fraction form
    243,363.40/365,045.10 = 172,504.60/x
  3. Step 3: Cross multiply
    243,363.40x = 365,045.10 × 172,504.60
  4. Step 4: Simplify right side
    243,363.40x = 62,971,958,957.46
  5. Step 5: Solve for x
    x = 62,971,958,957.46/243,363.40
  6. Step 6: Final answer
    x = 258,756.90

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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.