Home / 438,887.08-658,353.30-139,391.20

Finding the Fourth Proportional to 438,887.08, 658,353.30 and 139,391.20

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Solution

The fourth proportional to 438,887.08, 658,353.30 and 139,391.20 is: 209,094.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,887.08 : 658,353.30 = 139,391.20 : x
  2. Step 2: Convert to fraction form
    438,887.08/658,353.30 = 139,391.20/x
  3. Step 3: Cross multiply
    438,887.08x = 658,353.30 × 139,391.20
  4. Step 4: Simplify right side
    438,887.08x = 91,768,656,510.96
  5. Step 5: Solve for x
    x = 91,768,656,510.96/438,887.08
  6. Step 6: Final answer
    x = 209,094.00

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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.