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Finding the Fourth Proportional to 543,275.28, 749,767.32 and 316,993.68

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Solution

The fourth proportional to 543,275.28, 749,767.32 and 316,993.68 is: 437,478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,275.28 : 749,767.32 = 316,993.68 : x
  2. Step 2: Convert to fraction form
    543,275.28/749,767.32 = 316,993.68/x
  3. Step 3: Cross multiply
    543,275.28x = 749,767.32 × 316,993.68
  4. Step 4: Simplify right side
    543,275.28x = 237,671,501,910.54
  5. Step 5: Solve for x
    x = 237,671,501,910.54/543,275.28
  6. Step 6: Final answer
    x = 437,478.96

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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.