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Finding the Fourth Proportional to 258,888.06, 357,264.78 and 145,710.80

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Solution

The fourth proportional to 258,888.06, 357,264.78 and 145,710.80 is: 201,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,888.06 : 357,264.78 = 145,710.80 : x
  2. Step 2: Convert to fraction form
    258,888.06/357,264.78 = 145,710.80/x
  3. Step 3: Cross multiply
    258,888.06x = 357,264.78 × 145,710.80
  4. Step 4: Simplify right side
    258,888.06x = 52,057,336,905.62
  5. Step 5: Solve for x
    x = 52,057,336,905.62/258,888.06
  6. Step 6: Final answer
    x = 201,080.49

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1.5x scale

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.