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Finding the Fourth Proportional to 377,987.72, 521,598.29 and 208,221.84

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Solution

The fourth proportional to 377,987.72, 521,598.29 and 208,221.84 is: 287,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,987.72 : 521,598.29 = 208,221.84 : x
  2. Step 2: Convert to fraction form
    377,987.72/521,598.29 = 208,221.84/x
  3. Step 3: Cross multiply
    377,987.72x = 521,598.29 × 208,221.84
  4. Step 4: Simplify right side
    377,987.72x = 108,608,154,643.54
  5. Step 5: Solve for x
    x = 108,608,154,643.54/377,987.72
  6. Step 6: Final answer
    x = 287,332.50

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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.