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Finding the Fourth Proportional to 303,770.10, 455,655.15 and 286,274.10

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Solution

The fourth proportional to 303,770.10, 455,655.15 and 286,274.10 is: 429,411.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,770.10 : 455,655.15 = 286,274.10 : x
  2. Step 2: Convert to fraction form
    303,770.10/455,655.15 = 286,274.10/x
  3. Step 3: Cross multiply
    303,770.10x = 455,655.15 × 286,274.10
  4. Step 4: Simplify right side
    303,770.10x = 130,442,267,976.62
  5. Step 5: Solve for x
    x = 130,442,267,976.62/303,770.10
  6. Step 6: Final answer
    x = 429,411.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.