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Finding the Fourth Proportional to 520,207.34, 780,385.33 and 160,408.59

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Solution

The fourth proportional to 520,207.34, 780,385.33 and 160,408.59 is: 240,635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,207.34 : 780,385.33 = 160,408.59 : x
  2. Step 2: Convert to fraction form
    520,207.34/780,385.33 = 160,408.59/x
  3. Step 3: Cross multiply
    520,207.34x = 780,385.33 × 160,408.59
  4. Step 4: Simplify right side
    520,207.34x = 125,180,510,895.52
  5. Step 5: Solve for x
    x = 125,180,510,895.52/520,207.34
  6. Step 6: Final answer
    x = 240,635.80

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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.