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Finding the Fourth Proportional to 200,005.47, 275,877.50 and 128,271.87

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Solution

The fourth proportional to 200,005.47, 275,877.50 and 128,271.87 is: 176,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,005.47 : 275,877.50 = 128,271.87 : x
  2. Step 2: Convert to fraction form
    200,005.47/275,877.50 = 128,271.87/x
  3. Step 3: Cross multiply
    200,005.47x = 275,877.50 × 128,271.87
  4. Step 4: Simplify right side
    200,005.47x = 35,387,322,174.57
  5. Step 5: Solve for x
    x = 35,387,322,174.57/200,005.47
  6. Step 6: Final answer
    x = 176,931.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.