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Finding the Fourth Proportional to 402,215.64, 555,058.70 and 223,367.64

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Solution

The fourth proportional to 402,215.64, 555,058.70 and 223,367.64 is: 308,247.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,215.64 : 555,058.70 = 223,367.64 : x
  2. Step 2: Convert to fraction form
    402,215.64/555,058.70 = 223,367.64/x
  3. Step 3: Cross multiply
    402,215.64x = 555,058.70 × 223,367.64
  4. Step 4: Simplify right side
    402,215.64x = 123,982,151,880.47
  5. Step 5: Solve for x
    x = 123,982,151,880.47/402,215.64
  6. Step 6: Final answer
    x = 308,247.96

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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.