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Finding the Fourth Proportional to 384,749.80, 577,186.72 and 118,510.19

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Solution

The fourth proportional to 384,749.80, 577,186.72 and 118,510.19 is: 177,784.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,749.80 : 577,186.72 = 118,510.19 : x
  2. Step 2: Convert to fraction form
    384,749.80/577,186.72 = 118,510.19/x
  3. Step 3: Cross multiply
    384,749.80x = 577,186.72 × 118,510.19
  4. Step 4: Simplify right side
    384,749.80x = 68,402,508,999.37
  5. Step 5: Solve for x
    x = 68,402,508,999.37/384,749.80
  6. Step 6: Final answer
    x = 177,784.39

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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.