Home / 402,789.33-555,837.53-221,501.07

Finding the Fourth Proportional to 402,789.33, 555,837.53 and 221,501.07

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Solution

The fourth proportional to 402,789.33, 555,837.53 and 221,501.07 is: 305,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,789.33 : 555,837.53 = 221,501.07 : x
  2. Step 2: Convert to fraction form
    402,789.33/555,837.53 = 221,501.07/x
  3. Step 3: Cross multiply
    402,789.33x = 555,837.53 × 221,501.07
  4. Step 4: Simplify right side
    402,789.33x = 123,118,606,533.65
  5. Step 5: Solve for x
    x = 123,118,606,533.65/402,789.33
  6. Step 6: Final answer
    x = 305,665.01

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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.