Home / 387,533.14-580,986.02-121,156.54

Finding the Fourth Proportional to 387,533.14, 580,986.02 and 121,156.54

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Solution

The fourth proportional to 387,533.14, 580,986.02 and 121,156.54 is: 181,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,533.14 : 580,986.02 = 121,156.54 : x
  2. Step 2: Convert to fraction form
    387,533.14/580,986.02 = 121,156.54/x
  3. Step 3: Cross multiply
    387,533.14x = 580,986.02 × 121,156.54
  4. Step 4: Simplify right side
    387,533.14x = 70,390,255,971.57
  5. Step 5: Solve for x
    x = 70,390,255,971.57/387,533.14
  6. Step 6: Final answer
    x = 181,636.74

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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.