Home / 387,009.12-534,024.23-214,903.69

Finding the Fourth Proportional to 387,009.12, 534,024.23 and 214,903.69

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Solution

The fourth proportional to 387,009.12, 534,024.23 and 214,903.69 is: 296,540.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,009.12 : 534,024.23 = 214,903.69 : x
  2. Step 2: Convert to fraction form
    387,009.12/534,024.23 = 214,903.69/x
  3. Step 3: Cross multiply
    387,009.12x = 534,024.23 × 214,903.69
  4. Step 4: Simplify right side
    387,009.12x = 114,763,777,323.21
  5. Step 5: Solve for x
    x = 114,763,777,323.21/387,009.12
  6. Step 6: Final answer
    x = 296,540.24

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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.