Home / 478,939.80-718,280.10-141,979.80

Finding the Fourth Proportional to 478,939.80, 718,280.10 and 141,979.80

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Solution

The fourth proportional to 478,939.80, 718,280.10 and 141,979.80 is: 212,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,939.80 : 718,280.10 = 141,979.80 : x
  2. Step 2: Convert to fraction form
    478,939.80/718,280.10 = 141,979.80/x
  3. Step 3: Cross multiply
    478,939.80x = 718,280.10 × 141,979.80
  4. Step 4: Simplify right side
    478,939.80x = 101,981,264,941.98
  5. Step 5: Solve for x
    x = 101,981,264,941.98/478,939.80
  6. Step 6: Final answer
    x = 212,931.28

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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.