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Finding the Fourth Proportional to 289,421.60, 434,132.40 and 242,765.60

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Solution

The fourth proportional to 289,421.60, 434,132.40 and 242,765.60 is: 364,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,421.60 : 434,132.40 = 242,765.60 : x
  2. Step 2: Convert to fraction form
    289,421.60/434,132.40 = 242,765.60/x
  3. Step 3: Cross multiply
    289,421.60x = 434,132.40 × 242,765.60
  4. Step 4: Simplify right side
    289,421.60x = 105,392,412,565.44
  5. Step 5: Solve for x
    x = 105,392,412,565.44/289,421.60
  6. Step 6: Final answer
    x = 364,148.40

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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.