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Finding the Fourth Proportional to 405,124.51, 558,597.62 and 276,139.35

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Solution

The fourth proportional to 405,124.51, 558,597.62 and 276,139.35 is: 380,749.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,124.51 : 558,597.62 = 276,139.35 : x
  2. Step 2: Convert to fraction form
    405,124.51/558,597.62 = 276,139.35/x
  3. Step 3: Cross multiply
    405,124.51x = 558,597.62 × 276,139.35
  4. Step 4: Simplify right side
    405,124.51x = 154,250,784,406.47
  5. Step 5: Solve for x
    x = 154,250,784,406.47/405,124.51
  6. Step 6: Final answer
    x = 380,749.08

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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.