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Finding the Fourth Proportional to 369,369.79, 509,730.30 and 199,603.91

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Solution

The fourth proportional to 369,369.79, 509,730.30 and 199,603.91 is: 275,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,369.79 : 509,730.30 = 199,603.91 : x
  2. Step 2: Convert to fraction form
    369,369.79/509,730.30 = 199,603.91/x
  3. Step 3: Cross multiply
    369,369.79x = 509,730.30 × 199,603.91
  4. Step 4: Simplify right side
    369,369.79x = 101,744,162,199.80
  5. Step 5: Solve for x
    x = 101,744,162,199.80/369,369.79
  6. Step 6: Final answer
    x = 275,453.40

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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.