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Finding the Fourth Proportional to 387,018.56, 534,070.02 and 214,945.40

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Solution

The fourth proportional to 387,018.56, 534,070.02 and 214,945.40 is: 296,615.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,018.56 : 534,070.02 = 214,945.40 : x
  2. Step 2: Convert to fraction form
    387,018.56/534,070.02 = 214,945.40/x
  3. Step 3: Cross multiply
    387,018.56x = 534,070.02 × 214,945.40
  4. Step 4: Simplify right side
    387,018.56x = 114,795,894,076.91
  5. Step 5: Solve for x
    x = 114,795,894,076.91/387,018.56
  6. Step 6: Final answer
    x = 296,615.99

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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.