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Finding the Fourth Proportional to 315,666.45, 473,333.49 and 215,855.28

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Solution

The fourth proportional to 315,666.45, 473,333.49 and 215,855.28 is: 323,669.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,666.45 : 473,333.49 = 215,855.28 : x
  2. Step 2: Convert to fraction form
    315,666.45/473,333.49 = 215,855.28/x
  3. Step 3: Cross multiply
    315,666.45x = 473,333.49 × 215,855.28
  4. Step 4: Simplify right side
    315,666.45x = 102,171,533,017.33
  5. Step 5: Solve for x
    x = 102,171,533,017.33/315,666.45
  6. Step 6: Final answer
    x = 323,669.28

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1.5x scale

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.