Home / 388,941-583,509.90-108,458.28

Finding the Fourth Proportional to 388,941, 583,509.90 and 108,458.28

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Solution

The fourth proportional to 388,941, 583,509.90 and 108,458.28 is: 162,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,941 : 583,509.90 = 108,458.28 : x
  2. Step 2: Convert to fraction form
    388,941/583,509.90 = 108,458.28/x
  3. Step 3: Cross multiply
    388,941x = 583,509.90 × 108,458.28
  4. Step 4: Simplify right side
    388,941x = 63,286,480,116.97
  5. Step 5: Solve for x
    x = 63,286,480,116.97/388,941
  6. Step 6: Final answer
    x = 162,714.86

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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.