Home / 439,000.04-658,431.44-139,441.20

Finding the Fourth Proportional to 439,000.04, 658,431.44 and 139,441.20

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Solution

The fourth proportional to 439,000.04, 658,431.44 and 139,441.20 is: 209,140.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,000.04 : 658,431.44 = 139,441.20 : x
  2. Step 2: Convert to fraction form
    439,000.04/658,431.44 = 139,441.20/x
  3. Step 3: Cross multiply
    439,000.04x = 658,431.44 × 139,441.20
  4. Step 4: Simplify right side
    439,000.04x = 91,812,470,111.33
  5. Step 5: Solve for x
    x = 91,812,470,111.33/439,000.04
  6. Step 6: Final answer
    x = 209,140.00

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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.