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Finding the Fourth Proportional to 315,292.86, 473,006.85 and 90,651.30

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Solution

The fourth proportional to 315,292.86, 473,006.85 and 90,651.30 is: 135,996.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,292.86 : 473,006.85 = 90,651.30 : x
  2. Step 2: Convert to fraction form
    315,292.86/473,006.85 = 90,651.30/x
  3. Step 3: Cross multiply
    315,292.86x = 473,006.85 × 90,651.30
  4. Step 4: Simplify right side
    315,292.86x = 42,878,685,861.41
  5. Step 5: Solve for x
    x = 42,878,685,861.41/315,292.86
  6. Step 6: Final answer
    x = 135,996.37

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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.