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Finding the Fourth Proportional to 346,008.72, 476,783.40 and 255,220.80

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Solution

The fourth proportional to 346,008.72, 476,783.40 and 255,220.80 is: 351,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,008.72 : 476,783.40 = 255,220.80 : x
  2. Step 2: Convert to fraction form
    346,008.72/476,783.40 = 255,220.80/x
  3. Step 3: Cross multiply
    346,008.72x = 476,783.40 × 255,220.80
  4. Step 4: Simplify right side
    346,008.72x = 121,685,040,774.72
  5. Step 5: Solve for x
    x = 121,685,040,774.72/346,008.72
  6. Step 6: Final answer
    x = 351,682.01

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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.