Home / 459,426-689,139.04-143,907.50

Finding the Fourth Proportional to 459,426, 689,139.04 and 143,907.50

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Solution

The fourth proportional to 459,426, 689,139.04 and 143,907.50 is: 215,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,426 : 689,139.04 = 143,907.50 : x
  2. Step 2: Convert to fraction form
    459,426/689,139.04 = 143,907.50/x
  3. Step 3: Cross multiply
    459,426x = 689,139.04 × 143,907.50
  4. Step 4: Simplify right side
    459,426x = 99,172,276,398.80
  5. Step 5: Solve for x
    x = 99,172,276,398.80/459,426
  6. Step 6: Final answer
    x = 215,861.26

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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.