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Finding the Fourth Proportional to 245,801.76, 368,703.80 and 85,877.01

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Solution

The fourth proportional to 245,801.76, 368,703.80 and 85,877.01 is: 128,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,801.76 : 368,703.80 = 85,877.01 : x
  2. Step 2: Convert to fraction form
    245,801.76/368,703.80 = 85,877.01/x
  3. Step 3: Cross multiply
    245,801.76x = 368,703.80 × 85,877.01
  4. Step 4: Simplify right side
    245,801.76x = 31,663,179,812.29
  5. Step 5: Solve for x
    x = 31,663,179,812.29/245,801.76
  6. Step 6: Final answer
    x = 128,815.92

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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.