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Finding the Fourth Proportional to 281,931, 389,029.02 and 154,573.08

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Solution

The fourth proportional to 281,931, 389,029.02 and 154,573.08 is: 213,291.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,931 : 389,029.02 = 154,573.08 : x
  2. Step 2: Convert to fraction form
    281,931/389,029.02 = 154,573.08/x
  3. Step 3: Cross multiply
    281,931x = 389,029.02 × 154,573.08
  4. Step 4: Simplify right side
    281,931x = 60,133,413,830.78
  5. Step 5: Solve for x
    x = 60,133,413,830.78/281,931
  6. Step 6: Final answer
    x = 213,291.24

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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.