Home / 405,097.12-558,800.40-243,840.16

Finding the Fourth Proportional to 405,097.12, 558,800.40 and 243,840.16

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Solution

The fourth proportional to 405,097.12, 558,800.40 and 243,840.16 is: 336,358.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,097.12 : 558,800.40 = 243,840.16 : x
  2. Step 2: Convert to fraction form
    405,097.12/558,800.40 = 243,840.16/x
  3. Step 3: Cross multiply
    405,097.12x = 558,800.40 × 243,840.16
  4. Step 4: Simplify right side
    405,097.12x = 136,257,978,944.06
  5. Step 5: Solve for x
    x = 136,257,978,944.06/405,097.12
  6. Step 6: Final answer
    x = 336,358.79

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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.