Home / 258,916.56-357,257.16-145,715.28

Finding the Fourth Proportional to 258,916.56, 357,257.16 and 145,715.28

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Solution

The fourth proportional to 258,916.56, 357,257.16 and 145,715.28 is: 201,060.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,916.56 : 357,257.16 = 145,715.28 : x
  2. Step 2: Convert to fraction form
    258,916.56/357,257.16 = 145,715.28/x
  3. Step 3: Cross multiply
    258,916.56x = 357,257.16 × 145,715.28
  4. Step 4: Simplify right side
    258,916.56x = 52,057,827,101.40
  5. Step 5: Solve for x
    x = 52,057,827,101.40/258,916.56
  6. Step 6: Final answer
    x = 201,060.25

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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.