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Finding the Fourth Proportional to 347,437.50, 479,463.75 and 188,461.50

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Solution

The fourth proportional to 347,437.50, 479,463.75 and 188,461.50 is: 260,076.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,437.50 : 479,463.75 = 188,461.50 : x
  2. Step 2: Convert to fraction form
    347,437.50/479,463.75 = 188,461.50/x
  3. Step 3: Cross multiply
    347,437.50x = 479,463.75 × 188,461.50
  4. Step 4: Simplify right side
    347,437.50x = 90,360,457,520.63
  5. Step 5: Solve for x
    x = 90,360,457,520.63/347,437.50
  6. Step 6: Final answer
    x = 260,076.87

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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.