Home / 387,261.10-534,435.06-215,191.84

Finding the Fourth Proportional to 387,261.10, 534,435.06 and 215,191.84

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Solution

The fourth proportional to 387,261.10, 534,435.06 and 215,191.84 is: 296,972.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,261.10 : 534,435.06 = 215,191.84 : x
  2. Step 2: Convert to fraction form
    387,261.10/534,435.06 = 215,191.84/x
  3. Step 3: Cross multiply
    387,261.10x = 534,435.06 × 215,191.84
  4. Step 4: Simplify right side
    387,261.10x = 115,006,064,394.86
  5. Step 5: Solve for x
    x = 115,006,064,394.86/387,261.10
  6. Step 6: Final answer
    x = 296,972.93

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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.