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Finding the Fourth Proportional to 377,502.69, 520,976.13 and 216,368.15

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Solution

The fourth proportional to 377,502.69, 520,976.13 and 216,368.15 is: 298,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,502.69 : 520,976.13 = 216,368.15 : x
  2. Step 2: Convert to fraction form
    377,502.69/520,976.13 = 216,368.15/x
  3. Step 3: Cross multiply
    377,502.69x = 520,976.13 × 216,368.15
  4. Step 4: Simplify right side
    377,502.69x = 112,722,638,837.38
  5. Step 5: Solve for x
    x = 112,722,638,837.38/377,502.69
  6. Step 6: Final answer
    x = 298,600.89

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1.5x scale

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.