Home / 387,780.40-581,683.56-107,274.16

Finding the Fourth Proportional to 387,780.40, 581,683.56 and 107,274.16

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Solution

The fourth proportional to 387,780.40, 581,683.56 and 107,274.16 is: 160,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,780.40 : 581,683.56 = 107,274.16 : x
  2. Step 2: Convert to fraction form
    387,780.40/581,683.56 = 107,274.16/x
  3. Step 3: Cross multiply
    387,780.40x = 581,683.56 × 107,274.16
  4. Step 4: Simplify right side
    387,780.40x = 62,399,615,284.81
  5. Step 5: Solve for x
    x = 62,399,615,284.81/387,780.40
  6. Step 6: Final answer
    x = 160,914.83

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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.