Home / 356,275.12-491,423.12-229,111.60

Finding the Fourth Proportional to 356,275.12, 491,423.12 and 229,111.60

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Solution

The fourth proportional to 356,275.12, 491,423.12 and 229,111.60 is: 316,021.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,275.12 : 491,423.12 = 229,111.60 : x
  2. Step 2: Convert to fraction form
    356,275.12/491,423.12 = 229,111.60/x
  3. Step 3: Cross multiply
    356,275.12x = 491,423.12 × 229,111.60
  4. Step 4: Simplify right side
    356,275.12x = 112,590,737,300.19
  5. Step 5: Solve for x
    x = 112,590,737,300.19/356,275.12
  6. Step 6: Final answer
    x = 316,021.89

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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.