Home / 387,339.66-534,535.65-215,273.34

Finding the Fourth Proportional to 387,339.66, 534,535.65 and 215,273.34

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Solution

The fourth proportional to 387,339.66, 534,535.65 and 215,273.34 is: 297,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,339.66 : 534,535.65 = 215,273.34 : x
  2. Step 2: Convert to fraction form
    387,339.66/534,535.65 = 215,273.34/x
  3. Step 3: Cross multiply
    387,339.66x = 534,535.65 × 215,273.34
  4. Step 4: Simplify right side
    387,339.66x = 115,071,274,724.57
  5. Step 5: Solve for x
    x = 115,071,274,724.57/387,339.66
  6. Step 6: Final answer
    x = 297,081.05

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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.