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Finding the Fourth Proportional to 368,804.16, 508,907.61 and 207,655.07

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Solution

The fourth proportional to 368,804.16, 508,907.61 and 207,655.07 is: 286,540.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,804.16 : 508,907.61 = 207,655.07 : x
  2. Step 2: Convert to fraction form
    368,804.16/508,907.61 = 207,655.07/x
  3. Step 3: Cross multiply
    368,804.16x = 508,907.61 × 207,655.07
  4. Step 4: Simplify right side
    368,804.16x = 105,677,242,833.55
  5. Step 5: Solve for x
    x = 105,677,242,833.55/368,804.16
  6. Step 6: Final answer
    x = 286,540.27

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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.