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Finding the Fourth Proportional to 144,390.61, 216,622.86 and 55,620.28

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Solution

The fourth proportional to 144,390.61, 216,622.86 and 55,620.28 is: 83,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,390.61 : 216,622.86 = 55,620.28 : x
  2. Step 2: Convert to fraction form
    144,390.61/216,622.86 = 55,620.28/x
  3. Step 3: Cross multiply
    144,390.61x = 216,622.86 × 55,620.28
  4. Step 4: Simplify right side
    144,390.61x = 12,048,624,127.60
  5. Step 5: Solve for x
    x = 12,048,624,127.60/144,390.61
  6. Step 6: Final answer
    x = 83,444.65

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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.