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Finding the Fourth Proportional to 320,607.68, 442,436.65 and 177,364.64

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Solution

The fourth proportional to 320,607.68, 442,436.65 and 177,364.64 is: 244,762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,607.68 : 442,436.65 = 177,364.64 : x
  2. Step 2: Convert to fraction form
    320,607.68/442,436.65 = 177,364.64/x
  3. Step 3: Cross multiply
    320,607.68x = 442,436.65 × 177,364.64
  4. Step 4: Simplify right side
    320,607.68x = 78,472,617,812.74
  5. Step 5: Solve for x
    x = 78,472,617,812.74/320,607.68
  6. Step 6: Final answer
    x = 244,762.13

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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.