Home / 387,369.47-581,087.69-106,886.72

Finding the Fourth Proportional to 387,369.47, 581,087.69 and 106,886.72

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Solution

The fourth proportional to 387,369.47, 581,087.69 and 106,886.72 is: 160,339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,369.47 : 581,087.69 = 106,886.72 : x
  2. Step 2: Convert to fraction form
    387,369.47/581,087.69 = 106,886.72/x
  3. Step 3: Cross multiply
    387,369.47x = 581,087.69 × 106,886.72
  4. Step 4: Simplify right side
    387,369.47x = 62,110,557,216.48
  5. Step 5: Solve for x
    x = 62,110,557,216.48/387,369.47
  6. Step 6: Final answer
    x = 160,339.32

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1.5x scale

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.