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Finding the Fourth Proportional to 259,613.60, 389,639.10 and 101,955.20

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Solution

The fourth proportional to 259,613.60, 389,639.10 and 101,955.20 is: 153,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,613.60 : 389,639.10 = 101,955.20 : x
  2. Step 2: Convert to fraction form
    259,613.60/389,639.10 = 101,955.20/x
  3. Step 3: Cross multiply
    259,613.60x = 389,639.10 × 101,955.20
  4. Step 4: Simplify right side
    259,613.60x = 39,725,732,368.32
  5. Step 5: Solve for x
    x = 39,725,732,368.32/259,613.60
  6. Step 6: Final answer
    x = 153,018.69

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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.