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Finding the Fourth Proportional to 377,113.36, 520,429.80 and 207,360.40

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Solution

The fourth proportional to 377,113.36, 520,429.80 and 207,360.40 is: 286,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,113.36 : 520,429.80 = 207,360.40 : x
  2. Step 2: Convert to fraction form
    377,113.36/520,429.80 = 207,360.40/x
  3. Step 3: Cross multiply
    377,113.36x = 520,429.80 × 207,360.40
  4. Step 4: Simplify right side
    377,113.36x = 107,916,531,499.92
  5. Step 5: Solve for x
    x = 107,916,531,499.92/377,113.36
  6. Step 6: Final answer
    x = 286,164.70

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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.