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Finding the Fourth Proportional to 368,820.12, 508,945.50 and 207,684.12

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Solution

The fourth proportional to 368,820.12, 508,945.50 and 207,684.12 is: 286,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,820.12 : 508,945.50 = 207,684.12 : x
  2. Step 2: Convert to fraction form
    368,820.12/508,945.50 = 207,684.12/x
  3. Step 3: Cross multiply
    368,820.12x = 508,945.50 × 207,684.12
  4. Step 4: Simplify right side
    368,820.12x = 105,699,898,295.46
  5. Step 5: Solve for x
    x = 105,699,898,295.46/368,820.12
  6. Step 6: Final answer
    x = 286,589.30

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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.