Home / 347,258.40-520,945.20-136,903.20

Finding the Fourth Proportional to 347,258.40, 520,945.20 and 136,903.20

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Solution

The fourth proportional to 347,258.40, 520,945.20 and 136,903.20 is: 205,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,258.40 : 520,945.20 = 136,903.20 : x
  2. Step 2: Convert to fraction form
    347,258.40/520,945.20 = 136,903.20/x
  3. Step 3: Cross multiply
    347,258.40x = 520,945.20 × 136,903.20
  4. Step 4: Simplify right side
    347,258.40x = 71,319,064,904.64
  5. Step 5: Solve for x
    x = 71,319,064,904.64/347,258.40
  6. Step 6: Final answer
    x = 205,377.51

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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.