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Finding the Fourth Proportional to 276,688.30, 415,032.45 and 253,068.70

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Solution

The fourth proportional to 276,688.30, 415,032.45 and 253,068.70 is: 379,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,688.30 : 415,032.45 = 253,068.70 : x
  2. Step 2: Convert to fraction form
    276,688.30/415,032.45 = 253,068.70/x
  3. Step 3: Cross multiply
    276,688.30x = 415,032.45 × 253,068.70
  4. Step 4: Simplify right side
    276,688.30x = 105,031,722,579.32
  5. Step 5: Solve for x
    x = 105,031,722,579.32/276,688.30
  6. Step 6: Final answer
    x = 379,603.05

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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.