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Finding the Fourth Proportional to 439,810.70, 659,629.65 and 144,322.70

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Solution

The fourth proportional to 439,810.70, 659,629.65 and 144,322.70 is: 216,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,810.70 : 659,629.65 = 144,322.70 : x
  2. Step 2: Convert to fraction form
    439,810.70/659,629.65 = 144,322.70/x
  3. Step 3: Cross multiply
    439,810.70x = 659,629.65 × 144,322.70
  4. Step 4: Simplify right side
    439,810.70x = 95,199,532,088.06
  5. Step 5: Solve for x
    x = 95,199,532,088.06/439,810.70
  6. Step 6: Final answer
    x = 216,455.70

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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.