Home / 426,112.08-639,412.34-173,345.91

Finding the Fourth Proportional to 426,112.08, 639,412.34 and 173,345.91

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Solution

The fourth proportional to 426,112.08, 639,412.34 and 173,345.91 is: 260,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,112.08 : 639,412.34 = 173,345.91 : x
  2. Step 2: Convert to fraction form
    426,112.08/639,412.34 = 173,345.91/x
  3. Step 3: Cross multiply
    426,112.08x = 639,412.34 × 173,345.91
  4. Step 4: Simplify right side
    426,112.08x = 110,839,513,075.80
  5. Step 5: Solve for x
    x = 110,839,513,075.80/426,112.08
  6. Step 6: Final answer
    x = 260,118.21

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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.