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Finding the Fourth Proportional to 211,346.59, 291,670.19 and 125,356.59

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Solution

The fourth proportional to 211,346.59, 291,670.19 and 125,356.59 is: 172,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,346.59 : 291,670.19 = 125,356.59 : x
  2. Step 2: Convert to fraction form
    211,346.59/291,670.19 = 125,356.59/x
  3. Step 3: Cross multiply
    211,346.59x = 291,670.19 × 125,356.59
  4. Step 4: Simplify right side
    211,346.59x = 36,562,780,423.05
  5. Step 5: Solve for x
    x = 36,562,780,423.05/211,346.59
  6. Step 6: Final answer
    x = 172,999.15

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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.