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Finding the Fourth Proportional to 265,733.64, 398,790 and 147,499.56

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Solution

The fourth proportional to 265,733.64, 398,790 and 147,499.56 is: 221,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,733.64 : 398,790 = 147,499.56 : x
  2. Step 2: Convert to fraction form
    265,733.64/398,790 = 147,499.56/x
  3. Step 3: Cross multiply
    265,733.64x = 398,790 × 147,499.56
  4. Step 4: Simplify right side
    265,733.64x = 58,821,349,532.40
  5. Step 5: Solve for x
    x = 58,821,349,532.40/265,733.64
  6. Step 6: Final answer
    x = 221,354.55

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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.