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Finding the Fourth Proportional to 258,258.24, 387,165.48 and 89,756.67

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Solution

The fourth proportional to 258,258.24, 387,165.48 and 89,756.67 is: 134,557.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,258.24 : 387,165.48 = 89,756.67 : x
  2. Step 2: Convert to fraction form
    258,258.24/387,165.48 = 89,756.67/x
  3. Step 3: Cross multiply
    258,258.24x = 387,165.48 × 89,756.67
  4. Step 4: Simplify right side
    258,258.24x = 34,750,684,223.75
  5. Step 5: Solve for x
    x = 34,750,684,223.75/258,258.24
  6. Step 6: Final answer
    x = 134,557.89

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1.5x scale

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.