Home / 420,205.61-579,883.06-229,219.00

Finding the Fourth Proportional to 420,205.61, 579,883.06 and 229,219.00

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Solution

The fourth proportional to 420,205.61, 579,883.06 and 229,219.00 is: 316,321.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,205.61 : 579,883.06 = 229,219.00 : x
  2. Step 2: Convert to fraction form
    420,205.61/579,883.06 = 229,219.00/x
  3. Step 3: Cross multiply
    420,205.61x = 579,883.06 × 229,219.00
  4. Step 4: Simplify right side
    420,205.61x = 132,920,213,966.96
  5. Step 5: Solve for x
    x = 132,920,213,966.96/420,205.61
  6. Step 6: Final answer
    x = 316,321.84

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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.