Home / 387,739.88-581,637.50-103,428.84

Finding the Fourth Proportional to 387,739.88, 581,637.50 and 103,428.84

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Solution

The fourth proportional to 387,739.88, 581,637.50 and 103,428.84 is: 155,150.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,739.88 : 581,637.50 = 103,428.84 : x
  2. Step 2: Convert to fraction form
    387,739.88/581,637.50 = 103,428.84/x
  3. Step 3: Cross multiply
    387,739.88x = 581,637.50 × 103,428.84
  4. Step 4: Simplify right side
    387,739.88x = 60,158,091,925.50
  5. Step 5: Solve for x
    x = 60,158,091,925.50/387,739.88
  6. Step 6: Final answer
    x = 155,150.64

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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.