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Finding the Fourth Proportional to 347,330.70, 520,218.45 and 285,122.70

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Solution

The fourth proportional to 347,330.70, 520,218.45 and 285,122.70 is: 427,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,330.70 : 520,218.45 = 285,122.70 : x
  2. Step 2: Convert to fraction form
    347,330.70/520,218.45 = 285,122.70/x
  3. Step 3: Cross multiply
    347,330.70x = 520,218.45 × 285,122.70
  4. Step 4: Simplify right side
    347,330.70x = 148,326,089,053.82
  5. Step 5: Solve for x
    x = 148,326,089,053.82/347,330.70
  6. Step 6: Final answer
    x = 427,045.72

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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.