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Finding the Fourth Proportional to 258,750.40, 357,050.16 and 145,570.72

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Solution

The fourth proportional to 258,750.40, 357,050.16 and 145,570.72 is: 200,873.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,750.40 : 357,050.16 = 145,570.72 : x
  2. Step 2: Convert to fraction form
    258,750.40/357,050.16 = 145,570.72/x
  3. Step 3: Cross multiply
    258,750.40x = 357,050.16 × 145,570.72
  4. Step 4: Simplify right side
    258,750.40x = 51,976,048,867.32
  5. Step 5: Solve for x
    x = 51,976,048,867.32/258,750.40
  6. Step 6: Final answer
    x = 200,873.31

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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.