Home / 361,919.20-542,878.80-272,106.40

Finding the Fourth Proportional to 361,919.20, 542,878.80 and 272,106.40

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Solution

The fourth proportional to 361,919.20, 542,878.80 and 272,106.40 is: 408,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,919.20 : 542,878.80 = 272,106.40 : x
  2. Step 2: Convert to fraction form
    361,919.20/542,878.80 = 272,106.40/x
  3. Step 3: Cross multiply
    361,919.20x = 542,878.80 × 272,106.40
  4. Step 4: Simplify right side
    361,919.20x = 147,720,795,904.32
  5. Step 5: Solve for x
    x = 147,720,795,904.32/361,919.20
  6. Step 6: Final answer
    x = 408,159.60

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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.