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Finding the Fourth Proportional to 425,783.76, 637,952.66 and 256,949.31

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Solution

The fourth proportional to 425,783.76, 637,952.66 and 256,949.31 is: 384,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,783.76 : 637,952.66 = 256,949.31 : x
  2. Step 2: Convert to fraction form
    425,783.76/637,952.66 = 256,949.31/x
  3. Step 3: Cross multiply
    425,783.76x = 637,952.66 × 256,949.31
  4. Step 4: Simplify right side
    425,783.76x = 163,921,496,442.04
  5. Step 5: Solve for x
    x = 163,921,496,442.04/425,783.76
  6. Step 6: Final answer
    x = 384,987.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.