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Finding the Fourth Proportional to 281,035.73, 387,838.58 and 153,711.32

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Solution

The fourth proportional to 281,035.73, 387,838.58 and 153,711.32 is: 212,126.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,035.73 : 387,838.58 = 153,711.32 : x
  2. Step 2: Convert to fraction form
    281,035.73/387,838.58 = 153,711.32/x
  3. Step 3: Cross multiply
    281,035.73x = 387,838.58 × 153,711.32
  4. Step 4: Simplify right side
    281,035.73x = 59,615,177,370.98
  5. Step 5: Solve for x
    x = 59,615,177,370.98/281,035.73
  6. Step 6: Final answer
    x = 212,126.68

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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.