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Finding the Fourth Proportional to 286,879.70, 429,801.15 and 253,702.10

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Solution

The fourth proportional to 286,879.70, 429,801.15 and 253,702.10 is: 380,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,879.70 : 429,801.15 = 253,702.10 : x
  2. Step 2: Convert to fraction form
    286,879.70/429,801.15 = 253,702.10/x
  3. Step 3: Cross multiply
    286,879.70x = 429,801.15 × 253,702.10
  4. Step 4: Simplify right side
    286,879.70x = 109,041,454,337.42
  5. Step 5: Solve for x
    x = 109,041,454,337.42/286,879.70
  6. Step 6: Final answer
    x = 380,094.70

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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.