Home / 387,946.40-581,920.30-121,727.36

Finding the Fourth Proportional to 387,946.40, 581,920.30 and 121,727.36

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Solution

The fourth proportional to 387,946.40, 581,920.30 and 121,727.36 is: 182,591.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,946.40 : 581,920.30 = 121,727.36 : x
  2. Step 2: Convert to fraction form
    387,946.40/581,920.30 = 121,727.36/x
  3. Step 3: Cross multiply
    387,946.40x = 581,920.30 × 121,727.36
  4. Step 4: Simplify right side
    387,946.40x = 70,835,621,849.41
  5. Step 5: Solve for x
    x = 70,835,621,849.41/387,946.40
  6. Step 6: Final answer
    x = 182,591.26

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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.