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Finding the Fourth Proportional to 425,430.76, 587,086.92 and 231,840.20

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Solution

The fourth proportional to 425,430.76, 587,086.92 and 231,840.20 is: 319,935.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,430.76 : 587,086.92 = 231,840.20 : x
  2. Step 2: Convert to fraction form
    425,430.76/587,086.92 = 231,840.20/x
  3. Step 3: Cross multiply
    425,430.76x = 587,086.92 × 231,840.20
  4. Step 4: Simplify right side
    425,430.76x = 136,110,348,950.18
  5. Step 5: Solve for x
    x = 136,110,348,950.18/425,430.76
  6. Step 6: Final answer
    x = 319,935.37

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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.