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Finding the Fourth Proportional to 397,347.40, 595,802.40 and 172,669.60

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Solution

The fourth proportional to 397,347.40, 595,802.40 and 172,669.60 is: 258,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,347.40 : 595,802.40 = 172,669.60 : x
  2. Step 2: Convert to fraction form
    397,347.40/595,802.40 = 172,669.60/x
  3. Step 3: Cross multiply
    397,347.40x = 595,802.40 × 172,669.60
  4. Step 4: Simplify right side
    397,347.40x = 102,876,962,087.04
  5. Step 5: Solve for x
    x = 102,876,962,087.04/397,347.40
  6. Step 6: Final answer
    x = 258,909.36

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1.5x scale

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.