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Finding the Fourth Proportional to 368,435.80, 508,405.17 and 207,287.38

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Solution

The fourth proportional to 368,435.80, 508,405.17 and 207,287.38 is: 286,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,435.80 : 508,405.17 = 207,287.38 : x
  2. Step 2: Convert to fraction form
    368,435.80/508,405.17 = 207,287.38/x
  3. Step 3: Cross multiply
    368,435.80x = 508,405.17 × 207,287.38
  4. Step 4: Simplify right side
    368,435.80x = 105,385,975,667.76
  5. Step 5: Solve for x
    x = 105,385,975,667.76/368,435.80
  6. Step 6: Final answer
    x = 286,036.20

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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.