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Finding the Fourth Proportional to 293,792.40, 440,688.60 and 72,176.40

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Solution

The fourth proportional to 293,792.40, 440,688.60 and 72,176.40 is: 108,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,792.40 : 440,688.60 = 72,176.40 : x
  2. Step 2: Convert to fraction form
    293,792.40/440,688.60 = 72,176.40/x
  3. Step 3: Cross multiply
    293,792.40x = 440,688.60 × 72,176.40
  4. Step 4: Simplify right side
    293,792.40x = 31,807,316,669.04
  5. Step 5: Solve for x
    x = 31,807,316,669.04/293,792.40
  6. Step 6: Final answer
    x = 108,264.60

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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.