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Finding the Fourth Proportional to 353,605.71, 488,193.90 and 243,412.50

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Solution

The fourth proportional to 353,605.71, 488,193.90 and 243,412.50 is: 336,059.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,605.71 : 488,193.90 = 243,412.50 : x
  2. Step 2: Convert to fraction form
    353,605.71/488,193.90 = 243,412.50/x
  3. Step 3: Cross multiply
    353,605.71x = 488,193.90 × 243,412.50
  4. Step 4: Simplify right side
    353,605.71x = 118,832,497,683.75
  5. Step 5: Solve for x
    x = 118,832,497,683.75/353,605.71
  6. Step 6: Final answer
    x = 336,059.33

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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.