Home / 387,565.23-534,884.31-215,500.35

Finding the Fourth Proportional to 387,565.23, 534,884.31 and 215,500.35

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Solution

The fourth proportional to 387,565.23, 534,884.31 and 215,500.35 is: 297,415.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,565.23 : 534,884.31 = 215,500.35 : x
  2. Step 2: Convert to fraction form
    387,565.23/534,884.31 = 215,500.35/x
  3. Step 3: Cross multiply
    387,565.23x = 534,884.31 × 215,500.35
  4. Step 4: Simplify right side
    387,565.23x = 115,267,756,014.51
  5. Step 5: Solve for x
    x = 115,267,756,014.51/387,565.23
  6. Step 6: Final answer
    x = 297,415.11

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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.