Home / 320,918.79-442,897.64-177,678.83

Finding the Fourth Proportional to 320,918.79, 442,897.64 and 177,678.83

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Solution

The fourth proportional to 320,918.79, 442,897.64 and 177,678.83 is: 245,213.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,918.79 : 442,897.64 = 177,678.83 : x
  2. Step 2: Convert to fraction form
    320,918.79/442,897.64 = 177,678.83/x
  3. Step 3: Cross multiply
    320,918.79x = 442,897.64 × 177,678.83
  4. Step 4: Simplify right side
    320,918.79x = 78,693,536,036.40
  5. Step 5: Solve for x
    x = 78,693,536,036.40/320,918.79
  6. Step 6: Final answer
    x = 245,213.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.