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Finding the Fourth Proportional to 372,006.40, 513,370.88 and 219,051.20

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Solution

The fourth proportional to 372,006.40, 513,370.88 and 219,051.20 is: 302,291.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,006.40 : 513,370.88 = 219,051.20 : x
  2. Step 2: Convert to fraction form
    372,006.40/513,370.88 = 219,051.20/x
  3. Step 3: Cross multiply
    372,006.40x = 513,370.88 × 219,051.20
  4. Step 4: Simplify right side
    372,006.40x = 112,454,507,309.06
  5. Step 5: Solve for x
    x = 112,454,507,309.06/372,006.40
  6. Step 6: Final answer
    x = 302,291.86

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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.