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Finding the Fourth Proportional to 377,079.48, 520,356.30 and 207,312.28

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Solution

The fourth proportional to 377,079.48, 520,356.30 and 207,312.28 is: 286,083.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,079.48 : 520,356.30 = 207,312.28 : x
  2. Step 2: Convert to fraction form
    377,079.48/520,356.30 = 207,312.28/x
  3. Step 3: Cross multiply
    377,079.48x = 520,356.30 × 207,312.28
  4. Step 4: Simplify right side
    377,079.48x = 107,876,250,965.36
  5. Step 5: Solve for x
    x = 107,876,250,965.36/377,079.48
  6. Step 6: Final answer
    x = 286,083.59

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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.