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Finding the Fourth Proportional to 286,520.30, 429,780.45 and 236,656.70

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Solution

The fourth proportional to 286,520.30, 429,780.45 and 236,656.70 is: 354,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,520.30 : 429,780.45 = 236,656.70 : x
  2. Step 2: Convert to fraction form
    286,520.30/429,780.45 = 236,656.70/x
  3. Step 3: Cross multiply
    286,520.30x = 429,780.45 × 236,656.70
  4. Step 4: Simplify right side
    286,520.30x = 101,710,423,021.52
  5. Step 5: Solve for x
    x = 101,710,423,021.52/286,520.30
  6. Step 6: Final answer
    x = 354,985.05

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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.