Home / 258,372.10-387,533.08-78,459.07

Finding the Fourth Proportional to 258,372.10, 387,533.08 and 78,459.07

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Solution

The fourth proportional to 258,372.10, 387,533.08 and 78,459.07 is: 117,681.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,372.10 : 387,533.08 = 78,459.07 : x
  2. Step 2: Convert to fraction form
    258,372.10/387,533.08 = 78,459.07/x
  3. Step 3: Cross multiply
    258,372.10x = 387,533.08 × 78,459.07
  4. Step 4: Simplify right side
    258,372.10x = 30,405,485,555.51
  5. Step 5: Solve for x
    x = 30,405,485,555.51/258,372.10
  6. Step 6: Final answer
    x = 117,681.00

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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.