Home / 281,030.28-387,813.52-153,703.12

Finding the Fourth Proportional to 281,030.28, 387,813.52 and 153,703.12

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Solution

The fourth proportional to 281,030.28, 387,813.52 and 153,703.12 is: 212,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,030.28 : 387,813.52 = 153,703.12 : x
  2. Step 2: Convert to fraction form
    281,030.28/387,813.52 = 153,703.12/x
  3. Step 3: Cross multiply
    281,030.28x = 387,813.52 × 153,703.12
  4. Step 4: Simplify right side
    281,030.28x = 59,608,148,002.18
  5. Step 5: Solve for x
    x = 59,608,148,002.18/281,030.28
  6. Step 6: Final answer
    x = 212,105.78

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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.