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Finding the Fourth Proportional to 432,580.50, 648,870.75 and 137,092.50

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Solution

The fourth proportional to 432,580.50, 648,870.75 and 137,092.50 is: 205,638.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,580.50 : 648,870.75 = 137,092.50 : x
  2. Step 2: Convert to fraction form
    432,580.50/648,870.75 = 137,092.50/x
  3. Step 3: Cross multiply
    432,580.50x = 648,870.75 × 137,092.50
  4. Step 4: Simplify right side
    432,580.50x = 88,955,313,294.38
  5. Step 5: Solve for x
    x = 88,955,313,294.38/432,580.50
  6. Step 6: Final answer
    x = 205,638.75

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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.