Home / 387,212.07-534,354.80-215,130.27

Finding the Fourth Proportional to 387,212.07, 534,354.80 and 215,130.27

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Solution

The fourth proportional to 387,212.07, 534,354.80 and 215,130.27 is: 296,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,212.07 : 534,354.80 = 215,130.27 : x
  2. Step 2: Convert to fraction form
    387,212.07/534,354.80 = 215,130.27/x
  3. Step 3: Cross multiply
    387,212.07x = 534,354.80 × 215,130.27
  4. Step 4: Simplify right side
    387,212.07x = 114,955,891,324.15
  5. Step 5: Solve for x
    x = 114,955,891,324.15/387,212.07
  6. Step 6: Final answer
    x = 296,880.96

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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.