Home / 421,913.67-582,218.40-230,890.14

Finding the Fourth Proportional to 421,913.67, 582,218.40 and 230,890.14

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Solution

The fourth proportional to 421,913.67, 582,218.40 and 230,890.14 is: 318,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,913.67 : 582,218.40 = 230,890.14 : x
  2. Step 2: Convert to fraction form
    421,913.67/582,218.40 = 230,890.14/x
  3. Step 3: Cross multiply
    421,913.67x = 582,218.40 × 230,890.14
  4. Step 4: Simplify right side
    421,913.67x = 134,428,487,886.58
  5. Step 5: Solve for x
    x = 134,428,487,886.58/421,913.67
  6. Step 6: Final answer
    x = 318,616.10

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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.