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Finding the Fourth Proportional to 545,383.40, 818,112.48 and 185,407.76

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Solution

The fourth proportional to 545,383.40, 818,112.48 and 185,407.76 is: 278,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,383.40 : 818,112.48 = 185,407.76 : x
  2. Step 2: Convert to fraction form
    545,383.40/818,112.48 = 185,407.76/x
  3. Step 3: Cross multiply
    545,383.40x = 818,112.48 × 185,407.76
  4. Step 4: Simplify right side
    545,383.40x = 151,684,402,344.85
  5. Step 5: Solve for x
    x = 151,684,402,344.85/545,383.40
  6. Step 6: Final answer
    x = 278,124.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.