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Finding the Fourth Proportional to 312,476.40, 469,079.10 and 162,885.60

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Solution

The fourth proportional to 312,476.40, 469,079.10 and 162,885.60 is: 244,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,476.40 : 469,079.10 = 162,885.60 : x
  2. Step 2: Convert to fraction form
    312,476.40/469,079.10 = 162,885.60/x
  3. Step 3: Cross multiply
    312,476.40x = 469,079.10 × 162,885.60
  4. Step 4: Simplify right side
    312,476.40x = 76,406,230,650.96
  5. Step 5: Solve for x
    x = 76,406,230,650.96/312,476.40
  6. Step 6: Final answer
    x = 244,518.40

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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.