Home / 398,430.20-596,954.10-258,116.60

Finding the Fourth Proportional to 398,430.20, 596,954.10 and 258,116.60

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Solution

The fourth proportional to 398,430.20, 596,954.10 and 258,116.60 is: 386,727.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,430.20 : 596,954.10 = 258,116.60 : x
  2. Step 2: Convert to fraction form
    398,430.20/596,954.10 = 258,116.60/x
  3. Step 3: Cross multiply
    398,430.20x = 596,954.10 × 258,116.60
  4. Step 4: Simplify right side
    398,430.20x = 154,083,762,648.06
  5. Step 5: Solve for x
    x = 154,083,762,648.06/398,430.20
  6. Step 6: Final answer
    x = 386,727.12

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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.