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Finding the Fourth Proportional to 258,883.55, 357,258.57 and 145,706.30

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Solution

The fourth proportional to 258,883.55, 357,258.57 and 145,706.30 is: 201,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,883.55 : 357,258.57 = 145,706.30 : x
  2. Step 2: Convert to fraction form
    258,883.55/357,258.57 = 145,706.30/x
  3. Step 3: Cross multiply
    258,883.55x = 357,258.57 × 145,706.30
  4. Step 4: Simplify right side
    258,883.55x = 52,054,824,377.99
  5. Step 5: Solve for x
    x = 52,054,824,377.99/258,883.55
  6. Step 6: Final answer
    x = 201,074.28

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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.