Home / 420,618.51-580,437.18-229,633.47

Finding the Fourth Proportional to 420,618.51, 580,437.18 and 229,633.47

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Solution

The fourth proportional to 420,618.51, 580,437.18 and 229,633.47 is: 316,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,618.51 : 580,437.18 = 229,633.47 : x
  2. Step 2: Convert to fraction form
    420,618.51/580,437.18 = 229,633.47/x
  3. Step 3: Cross multiply
    420,618.51x = 580,437.18 × 229,633.47
  4. Step 4: Simplify right side
    420,618.51x = 133,287,803,760.42
  5. Step 5: Solve for x
    x = 133,287,803,760.42/420,618.51
  6. Step 6: Final answer
    x = 316,885.25

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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.