Home / 459,501.85-689,253.18-143,983.36

Finding the Fourth Proportional to 459,501.85, 689,253.18 and 143,983.36

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Solution

The fourth proportional to 459,501.85, 689,253.18 and 143,983.36 is: 215,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,501.85 : 689,253.18 = 143,983.36 : x
  2. Step 2: Convert to fraction form
    459,501.85/689,253.18 = 143,983.36/x
  3. Step 3: Cross multiply
    459,501.85x = 689,253.18 × 143,983.36
  4. Step 4: Simplify right side
    459,501.85x = 99,240,988,747.08
  5. Step 5: Solve for x
    x = 99,240,988,747.08/459,501.85
  6. Step 6: Final answer
    x = 215,975.17

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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.