Home / 402,795.34-555,845.80-221,507.08

Finding the Fourth Proportional to 402,795.34, 555,845.80 and 221,507.08

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Solution

The fourth proportional to 402,795.34, 555,845.80 and 221,507.08 is: 305,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795.34 : 555,845.80 = 221,507.08 : x
  2. Step 2: Convert to fraction form
    402,795.34/555,845.80 = 221,507.08/x
  3. Step 3: Cross multiply
    402,795.34x = 555,845.80 × 221,507.08
  4. Step 4: Simplify right side
    402,795.34x = 123,123,780,088.26
  5. Step 5: Solve for x
    x = 123,123,780,088.26/402,795.34
  6. Step 6: Final answer
    x = 305,673.30

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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.