Home / 459,820.40-689,752.20-144,287.60

Finding the Fourth Proportional to 459,820.40, 689,752.20 and 144,287.60

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Solution

The fourth proportional to 459,820.40, 689,752.20 and 144,287.60 is: 216,438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,820.40 : 689,752.20 = 144,287.60 : x
  2. Step 2: Convert to fraction form
    459,820.40/689,752.20 = 144,287.60/x
  3. Step 3: Cross multiply
    459,820.40x = 689,752.20 × 144,287.60
  4. Step 4: Simplify right side
    459,820.40x = 99,522,689,532.72
  5. Step 5: Solve for x
    x = 99,522,689,532.72/459,820.40
  6. Step 6: Final answer
    x = 216,438.18

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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.