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Finding the Fourth Proportional to 219,268.76, 328,875.80 and 61,509.51

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Solution

The fourth proportional to 219,268.76, 328,875.80 and 61,509.51 is: 92,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,268.76 : 328,875.80 = 61,509.51 : x
  2. Step 2: Convert to fraction form
    219,268.76/328,875.80 = 61,509.51/x
  3. Step 3: Cross multiply
    219,268.76x = 328,875.80 × 61,509.51
  4. Step 4: Simplify right side
    219,268.76x = 20,228,989,001.31
  5. Step 5: Solve for x
    x = 20,228,989,001.31/219,268.76
  6. Step 6: Final answer
    x = 92,256.60

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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.