Home / 421,721.78-581,975.70-230,735.94

Finding the Fourth Proportional to 421,721.78, 581,975.70 and 230,735.94

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Solution

The fourth proportional to 421,721.78, 581,975.70 and 230,735.94 is: 318,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,721.78 : 581,975.70 = 230,735.94 : x
  2. Step 2: Convert to fraction form
    421,721.78/581,975.70 = 230,735.94/x
  3. Step 3: Cross multiply
    421,721.78x = 581,975.70 × 230,735.94
  4. Step 4: Simplify right side
    421,721.78x = 134,282,710,196.66
  5. Step 5: Solve for x
    x = 134,282,710,196.66/421,721.78
  6. Step 6: Final answer
    x = 318,415.40

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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.