Home / 459,640.89-689,461.47-144,122.40

Finding the Fourth Proportional to 459,640.89, 689,461.47 and 144,122.40

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Solution

The fourth proportional to 459,640.89, 689,461.47 and 144,122.40 is: 216,183.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,640.89 : 689,461.47 = 144,122.40 : x
  2. Step 2: Convert to fraction form
    459,640.89/689,461.47 = 144,122.40/x
  3. Step 3: Cross multiply
    459,640.89x = 689,461.47 × 144,122.40
  4. Step 4: Simplify right side
    459,640.89x = 99,366,841,763.93
  5. Step 5: Solve for x
    x = 99,366,841,763.93/459,640.89
  6. Step 6: Final answer
    x = 216,183.64

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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.