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Finding the Fourth Proportional to 372,454.67, 513,999.11 and 211,316.51

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Solution

The fourth proportional to 372,454.67, 513,999.11 and 211,316.51 is: 291,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,454.67 : 513,999.11 = 211,316.51 : x
  2. Step 2: Convert to fraction form
    372,454.67/513,999.11 = 211,316.51/x
  3. Step 3: Cross multiply
    372,454.67x = 513,999.11 × 211,316.51
  4. Step 4: Simplify right side
    372,454.67x = 108,616,498,068.31
  5. Step 5: Solve for x
    x = 108,616,498,068.31/372,454.67
  6. Step 6: Final answer
    x = 291,623.40

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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.