Home / 478,945.80-718,289.10-141,985.80

Finding the Fourth Proportional to 478,945.80, 718,289.10 and 141,985.80

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Solution

The fourth proportional to 478,945.80, 718,289.10 and 141,985.80 is: 212,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,945.80 : 718,289.10 = 141,985.80 : x
  2. Step 2: Convert to fraction form
    478,945.80/718,289.10 = 141,985.80/x
  3. Step 3: Cross multiply
    478,945.80x = 718,289.10 × 141,985.80
  4. Step 4: Simplify right side
    478,945.80x = 101,986,852,494.78
  5. Step 5: Solve for x
    x = 101,986,852,494.78/478,945.80
  6. Step 6: Final answer
    x = 212,940.28

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1.5x scale

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.