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Finding the Fourth Proportional to 286,520.10, 429,780.15 and 262,025.70

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Solution

The fourth proportional to 286,520.10, 429,780.15 and 262,025.70 is: 393,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,520.10 : 429,780.15 = 262,025.70 : x
  2. Step 2: Convert to fraction form
    286,520.10/429,780.15 = 262,025.70/x
  3. Step 3: Cross multiply
    286,520.10x = 429,780.15 × 262,025.70
  4. Step 4: Simplify right side
    286,520.10x = 112,613,444,649.86
  5. Step 5: Solve for x
    x = 112,613,444,649.86/286,520.10
  6. Step 6: Final answer
    x = 393,038.55

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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.