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Finding the Fourth Proportional to 205,427.60, 307,536.60 and 153,069.20

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Solution

The fourth proportional to 205,427.60, 307,536.60 and 153,069.20 is: 229,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,427.60 : 307,536.60 = 153,069.20 : x
  2. Step 2: Convert to fraction form
    205,427.60/307,536.60 = 153,069.20/x
  3. Step 3: Cross multiply
    205,427.60x = 307,536.60 × 153,069.20
  4. Step 4: Simplify right side
    205,427.60x = 47,074,381,332.72
  5. Step 5: Solve for x
    x = 47,074,381,332.72/205,427.60
  6. Step 6: Final answer
    x = 229,153.15

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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.