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Finding the Fourth Proportional to 298,017.60, 447,544.80 and 288,686.40

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Solution

The fourth proportional to 298,017.60, 447,544.80 and 288,686.40 is: 433,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,017.60 : 447,544.80 = 288,686.40 : x
  2. Step 2: Convert to fraction form
    298,017.60/447,544.80 = 288,686.40/x
  3. Step 3: Cross multiply
    298,017.60x = 447,544.80 × 288,686.40
  4. Step 4: Simplify right side
    298,017.60x = 129,200,097,150.72
  5. Step 5: Solve for x
    x = 129,200,097,150.72/298,017.60
  6. Step 6: Final answer
    x = 433,531.77

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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.