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Finding the Fourth Proportional to 203,495.04, 305,070.30 and 77,065.58

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Solution

The fourth proportional to 203,495.04, 305,070.30 and 77,065.58 is: 115,533.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,495.04 : 305,070.30 = 77,065.58 : x
  2. Step 2: Convert to fraction form
    203,495.04/305,070.30 = 77,065.58/x
  3. Step 3: Cross multiply
    203,495.04x = 305,070.30 × 77,065.58
  4. Step 4: Simplify right side
    203,495.04x = 23,510,420,372.95
  5. Step 5: Solve for x
    x = 23,510,420,372.95/203,495.04
  6. Step 6: Final answer
    x = 115,533.14

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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.