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Finding the Fourth Proportional to 279,448.56, 385,539 and 187,590.48

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Solution

The fourth proportional to 279,448.56, 385,539 and 187,590.48 is: 258,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,448.56 : 385,539 = 187,590.48 : x
  2. Step 2: Convert to fraction form
    279,448.56/385,539 = 187,590.48/x
  3. Step 3: Cross multiply
    279,448.56x = 385,539 × 187,590.48
  4. Step 4: Simplify right side
    279,448.56x = 72,323,446,068.72
  5. Step 5: Solve for x
    x = 72,323,446,068.72/279,448.56
  6. Step 6: Final answer
    x = 258,807.73

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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.