Home / 387,414.18-534,602.70-217,615.50

Finding the Fourth Proportional to 387,414.18, 534,602.70 and 217,615.50

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Solution

The fourth proportional to 387,414.18, 534,602.70 and 217,615.50 is: 300,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,414.18 : 534,602.70 = 217,615.50 : x
  2. Step 2: Convert to fraction form
    387,414.18/534,602.70 = 217,615.50/x
  3. Step 3: Cross multiply
    387,414.18x = 534,602.70 × 217,615.50
  4. Step 4: Simplify right side
    387,414.18x = 116,337,833,861.85
  5. Step 5: Solve for x
    x = 116,337,833,861.85/387,414.18
  6. Step 6: Final answer
    x = 300,293.17

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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.