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Finding the Fourth Proportional to 377,071.61, 520,210.76 and 215,839.89

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Solution

The fourth proportional to 377,071.61, 520,210.76 and 215,839.89 is: 297,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,071.61 : 520,210.76 = 215,839.89 : x
  2. Step 2: Convert to fraction form
    377,071.61/520,210.76 = 215,839.89/x
  3. Step 3: Cross multiply
    377,071.61x = 520,210.76 × 215,839.89
  4. Step 4: Simplify right side
    377,071.61x = 112,282,232,136.02
  5. Step 5: Solve for x
    x = 112,282,232,136.02/377,071.61
  6. Step 6: Final answer
    x = 297,774.30

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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.