Home / 459,532.40-689,320.20-143,999.60

Finding the Fourth Proportional to 459,532.40, 689,320.20 and 143,999.60

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Solution

The fourth proportional to 459,532.40, 689,320.20 and 143,999.60 is: 216,006.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,532.40 : 689,320.20 = 143,999.60 : x
  2. Step 2: Convert to fraction form
    459,532.40/689,320.20 = 143,999.60/x
  3. Step 3: Cross multiply
    459,532.40x = 689,320.20 × 143,999.60
  4. Step 4: Simplify right side
    459,532.40x = 99,261,833,071.92
  5. Step 5: Solve for x
    x = 99,261,833,071.92/459,532.40
  6. Step 6: Final answer
    x = 216,006.17

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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.