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Finding the Fourth Proportional to 368,402.88, 508,375.12 and 207,264.72

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Solution

The fourth proportional to 368,402.88, 508,375.12 and 207,264.72 is: 286,013.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,402.88 : 508,375.12 = 207,264.72 : x
  2. Step 2: Convert to fraction form
    368,402.88/508,375.12 = 207,264.72/x
  3. Step 3: Cross multiply
    368,402.88x = 508,375.12 × 207,264.72
  4. Step 4: Simplify right side
    368,402.88x = 105,368,226,901.77
  5. Step 5: Solve for x
    x = 105,368,226,901.77/368,402.88
  6. Step 6: Final answer
    x = 286,013.58

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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.