Home / 353,320.40-529,659.90-128,521.96

Finding the Fourth Proportional to 353,320.40, 529,659.90 and 128,521.96

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Solution

The fourth proportional to 353,320.40, 529,659.90 and 128,521.96 is: 192,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,320.40 : 529,659.90 = 128,521.96 : x
  2. Step 2: Convert to fraction form
    353,320.40/529,659.90 = 128,521.96/x
  3. Step 3: Cross multiply
    353,320.40x = 529,659.90 × 128,521.96
  4. Step 4: Simplify right side
    353,320.40x = 68,072,927,157.25
  5. Step 5: Solve for x
    x = 68,072,927,157.25/353,320.40
  6. Step 6: Final answer
    x = 192,666.28

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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.