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Finding the Fourth Proportional to 428,999.60, 592,008.16 and 235,406.71

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Solution

The fourth proportional to 428,999.60, 592,008.16 and 235,406.71 is: 324,855.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,999.60 : 592,008.16 = 235,406.71 : x
  2. Step 2: Convert to fraction form
    428,999.60/592,008.16 = 235,406.71/x
  3. Step 3: Cross multiply
    428,999.60x = 592,008.16 × 235,406.71
  4. Step 4: Simplify right side
    428,999.60x = 139,362,693,238.75
  5. Step 5: Solve for x
    x = 139,362,693,238.75/428,999.60
  6. Step 6: Final answer
    x = 324,855.07

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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.