Home / 205,923.20-308,884.80-72,802.40

Finding the Fourth Proportional to 205,923.20, 308,884.80 and 72,802.40

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Solution

The fourth proportional to 205,923.20, 308,884.80 and 72,802.40 is: 109,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,923.20 : 308,884.80 = 72,802.40 : x
  2. Step 2: Convert to fraction form
    205,923.20/308,884.80 = 72,802.40/x
  3. Step 3: Cross multiply
    205,923.20x = 308,884.80 × 72,802.40
  4. Step 4: Simplify right side
    205,923.20x = 22,487,554,763.52
  5. Step 5: Solve for x
    x = 22,487,554,763.52/205,923.20
  6. Step 6: Final answer
    x = 109,203.60

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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.