Home / 319,223.20-478,834.80-141,541.60

Finding the Fourth Proportional to 319,223.20, 478,834.80 and 141,541.60

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Solution

The fourth proportional to 319,223.20, 478,834.80 and 141,541.60 is: 212,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,223.20 : 478,834.80 = 141,541.60 : x
  2. Step 2: Convert to fraction form
    319,223.20/478,834.80 = 141,541.60/x
  3. Step 3: Cross multiply
    319,223.20x = 478,834.80 × 141,541.60
  4. Step 4: Simplify right side
    319,223.20x = 67,775,043,727.68
  5. Step 5: Solve for x
    x = 67,775,043,727.68/319,223.20
  6. Step 6: Final answer
    x = 212,312.40

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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.