Home / 402,719.16-555,740.94-221,430.84

Finding the Fourth Proportional to 402,719.16, 555,740.94 and 221,430.84

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Solution

The fourth proportional to 402,719.16, 555,740.94 and 221,430.84 is: 305,568.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,719.16 : 555,740.94 = 221,430.84 : x
  2. Step 2: Convert to fraction form
    402,719.16/555,740.94 = 221,430.84/x
  3. Step 3: Cross multiply
    402,719.16x = 555,740.94 × 221,430.84
  4. Step 4: Simplify right side
    402,719.16x = 123,058,183,166.59
  5. Step 5: Solve for x
    x = 123,058,183,166.59/402,719.16
  6. Step 6: Final answer
    x = 305,568.24

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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.