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Finding the Fourth Proportional to 402,235.66, 555,057.93 and 220,955.23

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Solution

The fourth proportional to 402,235.66, 555,057.93 and 220,955.23 is: 304,903.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,235.66 : 555,057.93 = 220,955.23 : x
  2. Step 2: Convert to fraction form
    402,235.66/555,057.93 = 220,955.23/x
  3. Step 3: Cross multiply
    402,235.66x = 555,057.93 × 220,955.23
  4. Step 4: Simplify right side
    402,235.66x = 122,642,952,586.47
  5. Step 5: Solve for x
    x = 122,642,952,586.47/402,235.66
  6. Step 6: Final answer
    x = 304,903.23

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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.