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Finding the Fourth Proportional to 219,312.64, 302,665.44 and 123,784.48

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Solution

The fourth proportional to 219,312.64, 302,665.44 and 123,784.48 is: 170,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,312.64 : 302,665.44 = 123,784.48 : x
  2. Step 2: Convert to fraction form
    219,312.64/302,665.44 = 123,784.48/x
  3. Step 3: Cross multiply
    219,312.64x = 302,665.44 × 123,784.48
  4. Step 4: Simplify right side
    219,312.64x = 37,465,284,104.37
  5. Step 5: Solve for x
    x = 37,465,284,104.37/219,312.64
  6. Step 6: Final answer
    x = 170,830.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.