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Finding the Fourth Proportional to 387,444.08, 534,670.80 and 217,676.72

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Solution

The fourth proportional to 387,444.08, 534,670.80 and 217,676.72 is: 300,392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,444.08 : 534,670.80 = 217,676.72 : x
  2. Step 2: Convert to fraction form
    387,444.08/534,670.80 = 217,676.72/x
  3. Step 3: Cross multiply
    387,444.08x = 534,670.80 × 217,676.72
  4. Step 4: Simplify right side
    387,444.08x = 116,385,386,023.78
  5. Step 5: Solve for x
    x = 116,385,386,023.78/387,444.08
  6. Step 6: Final answer
    x = 300,392.73

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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.