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Finding the Fourth Proportional to 372,384.77, 513,928.80 and 219,472.20

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Solution

The fourth proportional to 372,384.77, 513,928.80 and 219,472.20 is: 302,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,384.77 : 513,928.80 = 219,472.20 : x
  2. Step 2: Convert to fraction form
    372,384.77/513,928.80 = 219,472.20/x
  3. Step 3: Cross multiply
    372,384.77x = 513,928.80 × 219,472.20
  4. Step 4: Simplify right side
    372,384.77x = 112,793,081,809.72
  5. Step 5: Solve for x
    x = 112,793,081,809.72/372,384.77
  6. Step 6: Final answer
    x = 302,893.92

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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.