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Finding the Fourth Proportional to 368,433.31, 508,432.76 and 207,287.98

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Solution

The fourth proportional to 368,433.31, 508,432.76 and 207,287.98 is: 286,054.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,433.31 : 508,432.76 = 207,287.98 : x
  2. Step 2: Convert to fraction form
    368,433.31/508,432.76 = 207,287.98/x
  3. Step 3: Cross multiply
    368,433.31x = 508,432.76 × 207,287.98
  4. Step 4: Simplify right side
    368,433.31x = 105,391,996,725.84
  5. Step 5: Solve for x
    x = 105,391,996,725.84/368,433.31
  6. Step 6: Final answer
    x = 286,054.47

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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.