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Finding the Fourth Proportional to 472,427.78, 651,949.88 and 257,567.79

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Solution

The fourth proportional to 472,427.78, 651,949.88 and 257,567.79 is: 355,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,427.78 : 651,949.88 = 257,567.79 : x
  2. Step 2: Convert to fraction form
    472,427.78/651,949.88 = 257,567.79/x
  3. Step 3: Cross multiply
    472,427.78x = 651,949.88 × 257,567.79
  4. Step 4: Simplify right side
    472,427.78x = 167,921,289,782.37
  5. Step 5: Solve for x
    x = 167,921,289,782.37/472,427.78
  6. Step 6: Final answer
    x = 355,443.30

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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.