Home / 402,605.37-555,597.20-221,328.95

Finding the Fourth Proportional to 402,605.37, 555,597.20 and 221,328.95

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Solution

The fourth proportional to 402,605.37, 555,597.20 and 221,328.95 is: 305,434.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,605.37 : 555,597.20 = 221,328.95 : x
  2. Step 2: Convert to fraction form
    402,605.37/555,597.20 = 221,328.95/x
  3. Step 3: Cross multiply
    402,605.37x = 555,597.20 × 221,328.95
  4. Step 4: Simplify right side
    402,605.37x = 122,969,742,674.28
  5. Step 5: Solve for x
    x = 122,969,742,674.28/402,605.37
  6. Step 6: Final answer
    x = 305,434.93

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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.