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Finding the Fourth Proportional to 372,165, 513,572.06 and 211,030.90

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Solution

The fourth proportional to 372,165, 513,572.06 and 211,030.90 is: 291,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,165 : 513,572.06 = 211,030.90 : x
  2. Step 2: Convert to fraction form
    372,165/513,572.06 = 211,030.90/x
  3. Step 3: Cross multiply
    372,165x = 513,572.06 × 211,030.90
  4. Step 4: Simplify right side
    372,165x = 108,379,574,036.65
  5. Step 5: Solve for x
    x = 108,379,574,036.65/372,165
  6. Step 6: Final answer
    x = 291,213.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.