Home / 307,142.24-423,890.70-171,188.60

Finding the Fourth Proportional to 307,142.24, 423,890.70 and 171,188.60

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Solution

The fourth proportional to 307,142.24, 423,890.70 and 171,188.60 is: 236,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,142.24 : 423,890.70 = 171,188.60 : x
  2. Step 2: Convert to fraction form
    307,142.24/423,890.70 = 171,188.60/x
  3. Step 3: Cross multiply
    307,142.24x = 423,890.70 × 171,188.60
  4. Step 4: Simplify right side
    307,142.24x = 72,565,255,486.02
  5. Step 5: Solve for x
    x = 72,565,255,486.02/307,142.24
  6. Step 6: Final answer
    x = 236,259.45

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1.5x scale

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.