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Finding the Fourth Proportional to 387,153.07, 580,700.86 and 162,504.43

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Solution

The fourth proportional to 387,153.07, 580,700.86 and 162,504.43 is: 243,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,153.07 : 580,700.86 = 162,504.43 : x
  2. Step 2: Convert to fraction form
    387,153.07/580,700.86 = 162,504.43/x
  3. Step 3: Cross multiply
    387,153.07x = 580,700.86 × 162,504.43
  4. Step 4: Simplify right side
    387,153.07x = 94,366,462,254.81
  5. Step 5: Solve for x
    x = 94,366,462,254.81/387,153.07
  6. Step 6: Final answer
    x = 243,744.58

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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.