Home / 402,914.40-603,642.60-319,225.20

Finding the Fourth Proportional to 402,914.40, 603,642.60 and 319,225.20

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Solution

The fourth proportional to 402,914.40, 603,642.60 and 319,225.20 is: 478,260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,914.40 : 603,642.60 = 319,225.20 : x
  2. Step 2: Convert to fraction form
    402,914.40/603,642.60 = 319,225.20/x
  3. Step 3: Cross multiply
    402,914.40x = 603,642.60 × 319,225.20
  4. Step 4: Simplify right side
    402,914.40x = 192,697,929,713.52
  5. Step 5: Solve for x
    x = 192,697,929,713.52/402,914.40
  6. Step 6: Final answer
    x = 478,260.22

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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.