Home / 384,905.40-531,152.72-210,472.40

Finding the Fourth Proportional to 384,905.40, 531,152.72 and 210,472.40

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Solution

The fourth proportional to 384,905.40, 531,152.72 and 210,472.40 is: 290,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,905.40 : 531,152.72 = 210,472.40 : x
  2. Step 2: Convert to fraction form
    384,905.40/531,152.72 = 210,472.40/x
  3. Step 3: Cross multiply
    384,905.40x = 531,152.72 × 210,472.40
  4. Step 4: Simplify right side
    384,905.40x = 111,792,987,744.93
  5. Step 5: Solve for x
    x = 111,792,987,744.93/384,905.40
  6. Step 6: Final answer
    x = 290,442.76

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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.