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Finding the Fourth Proportional to 637,999.70, 957,129.15 and 217,318.10

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Solution

The fourth proportional to 637,999.70, 957,129.15 and 217,318.10 is: 326,021.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,999.70 : 957,129.15 = 217,318.10 : x
  2. Step 2: Convert to fraction form
    637,999.70/957,129.15 = 217,318.10/x
  3. Step 3: Cross multiply
    637,999.70x = 957,129.15 × 217,318.10
  4. Step 4: Simplify right side
    637,999.70x = 208,001,488,332.62
  5. Step 5: Solve for x
    x = 208,001,488,332.62/637,999.70
  6. Step 6: Final answer
    x = 326,021.29

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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.