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Finding the Fourth Proportional to 260,527.20, 390,601.80 and 176,078.40

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Solution

The fourth proportional to 260,527.20, 390,601.80 and 176,078.40 is: 263,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,527.20 : 390,601.80 = 176,078.40 : x
  2. Step 2: Convert to fraction form
    260,527.20/390,601.80 = 176,078.40/x
  3. Step 3: Cross multiply
    260,527.20x = 390,601.80 × 176,078.40
  4. Step 4: Simplify right side
    260,527.20x = 68,776,539,981.12
  5. Step 5: Solve for x
    x = 68,776,539,981.12/260,527.20
  6. Step 6: Final answer
    x = 263,989.86

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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.