Home / 387,330.85-534,502.31-215,259.55

Finding the Fourth Proportional to 387,330.85, 534,502.31 and 215,259.55

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Solution

The fourth proportional to 387,330.85, 534,502.31 and 215,259.55 is: 297,050.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,330.85 : 534,502.31 = 215,259.55 : x
  2. Step 2: Convert to fraction form
    387,330.85/534,502.31 = 215,259.55/x
  3. Step 3: Cross multiply
    387,330.85x = 534,502.31 × 215,259.55
  4. Step 4: Simplify right side
    387,330.85x = 115,056,725,648.26
  5. Step 5: Solve for x
    x = 115,056,725,648.26/387,330.85
  6. Step 6: Final answer
    x = 297,050.25

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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.