Home / 426,281.94-638,995.23-145,607.22

Finding the Fourth Proportional to 426,281.94, 638,995.23 and 145,607.22

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Solution

The fourth proportional to 426,281.94, 638,995.23 and 145,607.22 is: 218,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,281.94 : 638,995.23 = 145,607.22 : x
  2. Step 2: Convert to fraction form
    426,281.94/638,995.23 = 145,607.22/x
  3. Step 3: Cross multiply
    426,281.94x = 638,995.23 × 145,607.22
  4. Step 4: Simplify right side
    426,281.94x = 93,042,319,033.56
  5. Step 5: Solve for x
    x = 93,042,319,033.56/426,281.94
  6. Step 6: Final answer
    x = 218,264.75

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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.