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Finding the Fourth Proportional to 215,411.64, 323,117.64 and 103,065.36

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Solution

The fourth proportional to 215,411.64, 323,117.64 and 103,065.36 is: 154,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,411.64 : 323,117.64 = 103,065.36 : x
  2. Step 2: Convert to fraction form
    215,411.64/323,117.64 = 103,065.36/x
  3. Step 3: Cross multiply
    215,411.64x = 323,117.64 × 103,065.36
  4. Step 4: Simplify right side
    215,411.64x = 33,302,235,888.95
  5. Step 5: Solve for x
    x = 33,302,235,888.95/215,411.64
  6. Step 6: Final answer
    x = 154,598.13

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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.