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Finding the Fourth Proportional to 303,742.80, 455,225.40 and 268,750.80

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Solution

The fourth proportional to 303,742.80, 455,225.40 and 268,750.80 is: 402,782.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,742.80 : 455,225.40 = 268,750.80 : x
  2. Step 2: Convert to fraction form
    303,742.80/455,225.40 = 268,750.80/x
  3. Step 3: Cross multiply
    303,742.80x = 455,225.40 × 268,750.80
  4. Step 4: Simplify right side
    303,742.80x = 122,342,190,430.32
  5. Step 5: Solve for x
    x = 122,342,190,430.32/303,742.80
  6. Step 6: Final answer
    x = 402,782.19

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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.