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Finding the Fourth Proportional to 402,079.64, 554,870.40 and 220,803.26

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Solution

The fourth proportional to 402,079.64, 554,870.40 and 220,803.26 is: 304,708.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,079.64 : 554,870.40 = 220,803.26 : x
  2. Step 2: Convert to fraction form
    402,079.64/554,870.40 = 220,803.26/x
  3. Step 3: Cross multiply
    402,079.64x = 554,870.40 × 220,803.26
  4. Step 4: Simplify right side
    402,079.64x = 122,517,193,197.50
  5. Step 5: Solve for x
    x = 122,517,193,197.50/402,079.64
  6. Step 6: Final answer
    x = 304,708.77

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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.