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Finding the Fourth Proportional to 144,529.60, 216,859.20 and 65,603.20

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Solution

The fourth proportional to 144,529.60, 216,859.20 and 65,603.20 is: 98,434.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,529.60 : 216,859.20 = 65,603.20 : x
  2. Step 2: Convert to fraction form
    144,529.60/216,859.20 = 65,603.20/x
  3. Step 3: Cross multiply
    144,529.60x = 216,859.20 × 65,603.20
  4. Step 4: Simplify right side
    144,529.60x = 14,226,657,469.44
  5. Step 5: Solve for x
    x = 14,226,657,469.44/144,529.60
  6. Step 6: Final answer
    x = 98,434.21

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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.