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Finding the Fourth Proportional to 205,155.60, 307,762.20 and 64,899.60

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Solution

The fourth proportional to 205,155.60, 307,762.20 and 64,899.60 is: 97,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,155.60 : 307,762.20 = 64,899.60 : x
  2. Step 2: Convert to fraction form
    205,155.60/307,762.20 = 64,899.60/x
  3. Step 3: Cross multiply
    205,155.60x = 307,762.20 × 64,899.60
  4. Step 4: Simplify right side
    205,155.60x = 19,973,643,675.12
  5. Step 5: Solve for x
    x = 19,973,643,675.12/205,155.60
  6. Step 6: Final answer
    x = 97,358.51

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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.