Home / 387,341.48-581,012.68-121,103.39

Finding the Fourth Proportional to 387,341.48, 581,012.68 and 121,103.39

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Solution

The fourth proportional to 387,341.48, 581,012.68 and 121,103.39 is: 181,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,341.48 : 581,012.68 = 121,103.39 : x
  2. Step 2: Convert to fraction form
    387,341.48/581,012.68 = 121,103.39/x
  3. Step 3: Cross multiply
    387,341.48x = 581,012.68 × 121,103.39
  4. Step 4: Simplify right side
    387,341.48x = 70,362,605,180.99
  5. Step 5: Solve for x
    x = 70,362,605,180.99/387,341.48
  6. Step 6: Final answer
    x = 181,655.23

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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.