Home / 421,710.72-581,974.65-230,719.74

Finding the Fourth Proportional to 421,710.72, 581,974.65 and 230,719.74

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Solution

The fourth proportional to 421,710.72, 581,974.65 and 230,719.74 is: 318,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,710.72 : 581,974.65 = 230,719.74 : x
  2. Step 2: Convert to fraction form
    421,710.72/581,974.65 = 230,719.74/x
  3. Step 3: Cross multiply
    421,710.72x = 581,974.65 × 230,719.74
  4. Step 4: Simplify right side
    421,710.72x = 134,273,039,934.59
  5. Step 5: Solve for x
    x = 134,273,039,934.59/421,710.72
  6. Step 6: Final answer
    x = 318,400.82

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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.