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Finding the Fourth Proportional to 258,507.04, 387,762.36 and 90,027.04

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Solution

The fourth proportional to 258,507.04, 387,762.36 and 90,027.04 is: 135,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,507.04 : 387,762.36 = 90,027.04 : x
  2. Step 2: Convert to fraction form
    258,507.04/387,762.36 = 90,027.04/x
  3. Step 3: Cross multiply
    258,507.04x = 387,762.36 × 90,027.04
  4. Step 4: Simplify right side
    258,507.04x = 34,909,097,494.21
  5. Step 5: Solve for x
    x = 34,909,097,494.21/258,507.04
  6. Step 6: Final answer
    x = 135,041.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.