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Finding the Fourth Proportional to 502,079.86, 692,870.16 and 272,636.02

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Solution

The fourth proportional to 502,079.86, 692,870.16 and 272,636.02 is: 376,237.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,079.86 : 692,870.16 = 272,636.02 : x
  2. Step 2: Convert to fraction form
    502,079.86/692,870.16 = 272,636.02/x
  3. Step 3: Cross multiply
    502,079.86x = 692,870.16 × 272,636.02
  4. Step 4: Simplify right side
    502,079.86x = 188,901,362,799.16
  5. Step 5: Solve for x
    x = 188,901,362,799.16/502,079.86
  6. Step 6: Final answer
    x = 376,237.68

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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.