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Finding the Fourth Proportional to 290,132.80, 434,732.64 and 243,476.80

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Solution

The fourth proportional to 290,132.80, 434,732.64 and 243,476.80 is: 364,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,132.80 : 434,732.64 = 243,476.80 : x
  2. Step 2: Convert to fraction form
    290,132.80/434,732.64 = 243,476.80/x
  3. Step 3: Cross multiply
    290,132.80x = 434,732.64 × 243,476.80
  4. Step 4: Simplify right side
    290,132.80x = 105,847,312,042.75
  5. Step 5: Solve for x
    x = 105,847,312,042.75/290,132.80
  6. Step 6: Final answer
    x = 364,823.67

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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.