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Finding the Fourth Proportional to 368,603.36, 508,689 and 207,468.84

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Solution

The fourth proportional to 368,603.36, 508,689 and 207,468.84 is: 286,316.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,603.36 : 508,689 = 207,468.84 : x
  2. Step 2: Convert to fraction form
    368,603.36/508,689 = 207,468.84/x
  3. Step 3: Cross multiply
    368,603.36x = 508,689 × 207,468.84
  4. Step 4: Simplify right side
    368,603.36x = 105,537,116,750.76
  5. Step 5: Solve for x
    x = 105,537,116,750.76/368,603.36
  6. Step 6: Final answer
    x = 286,316.21

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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.