Home / 387,393.18-534,598.80-215,311.52

Finding the Fourth Proportional to 387,393.18, 534,598.80 and 215,311.52

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Solution

The fourth proportional to 387,393.18, 534,598.80 and 215,311.52 is: 297,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,393.18 : 534,598.80 = 215,311.52 : x
  2. Step 2: Convert to fraction form
    387,393.18/534,598.80 = 215,311.52/x
  3. Step 3: Cross multiply
    387,393.18x = 534,598.80 × 215,311.52
  4. Step 4: Simplify right side
    387,393.18x = 115,105,280,218.18
  5. Step 5: Solve for x
    x = 115,105,280,218.18/387,393.18
  6. Step 6: Final answer
    x = 297,127.79

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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.