Home / 525,128.08-724,644.84-310,216.72

Finding the Fourth Proportional to 525,128.08, 724,644.84 and 310,216.72

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Solution

The fourth proportional to 525,128.08, 724,644.84 and 310,216.72 is: 428,080.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,128.08 : 724,644.84 = 310,216.72 : x
  2. Step 2: Convert to fraction form
    525,128.08/724,644.84 = 310,216.72/x
  3. Step 3: Cross multiply
    525,128.08x = 724,644.84 × 310,216.72
  4. Step 4: Simplify right side
    525,128.08x = 224,796,945,429.73
  5. Step 5: Solve for x
    x = 224,796,945,429.73/525,128.08
  6. Step 6: Final answer
    x = 428,080.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.