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Finding the Fourth Proportional to 144,429.56, 216,552.02 and 69,400.40

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Solution

The fourth proportional to 144,429.56, 216,552.02 and 69,400.40 is: 104,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,429.56 : 216,552.02 = 69,400.40 : x
  2. Step 2: Convert to fraction form
    144,429.56/216,552.02 = 69,400.40/x
  3. Step 3: Cross multiply
    144,429.56x = 216,552.02 × 69,400.40
  4. Step 4: Simplify right side
    144,429.56x = 15,028,796,461.81
  5. Step 5: Solve for x
    x = 15,028,796,461.81/144,429.56
  6. Step 6: Final answer
    x = 104,056.24

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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.