Home / 310,437.07-428,438.56-172,629.65

Finding the Fourth Proportional to 310,437.07, 428,438.56 and 172,629.65

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Solution

The fourth proportional to 310,437.07, 428,438.56 and 172,629.65 is: 238,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,437.07 : 428,438.56 = 172,629.65 : x
  2. Step 2: Convert to fraction form
    310,437.07/428,438.56 = 172,629.65/x
  3. Step 3: Cross multiply
    310,437.07x = 428,438.56 × 172,629.65
  4. Step 4: Simplify right side
    310,437.07x = 73,961,196,727.02
  5. Step 5: Solve for x
    x = 73,961,196,727.02/310,437.07
  6. Step 6: Final answer
    x = 238,248.60

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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.