Home / 387,719.17-581,578.95-121,500.52

Finding the Fourth Proportional to 387,719.17, 581,578.95 and 121,500.52

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Solution

The fourth proportional to 387,719.17, 581,578.95 and 121,500.52 is: 182,250.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,719.17 : 581,578.95 = 121,500.52 : x
  2. Step 2: Convert to fraction form
    387,719.17/581,578.95 = 121,500.52/x
  3. Step 3: Cross multiply
    387,719.17x = 581,578.95 × 121,500.52
  4. Step 4: Simplify right side
    387,719.17x = 70,662,144,846.05
  5. Step 5: Solve for x
    x = 70,662,144,846.05/387,719.17
  6. Step 6: Final answer
    x = 182,250.84

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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.