Home / 387,829.02-581,756.25-107,322.78

Finding the Fourth Proportional to 387,829.02, 581,756.25 and 107,322.78

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Solution

The fourth proportional to 387,829.02, 581,756.25 and 107,322.78 is: 160,987.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,829.02 : 581,756.25 = 107,322.78 : x
  2. Step 2: Convert to fraction form
    387,829.02/581,756.25 = 107,322.78/x
  3. Step 3: Cross multiply
    387,829.02x = 581,756.25 × 107,322.78
  4. Step 4: Simplify right side
    387,829.02x = 62,435,698,032.38
  5. Step 5: Solve for x
    x = 62,435,698,032.38/387,829.02
  6. Step 6: Final answer
    x = 160,987.69

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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.