Home / 209,043.18-288,599.28-137,630.82

Finding the Fourth Proportional to 209,043.18, 288,599.28 and 137,630.82

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Solution

The fourth proportional to 209,043.18, 288,599.28 and 137,630.82 is: 190,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,043.18 : 288,599.28 = 137,630.82 : x
  2. Step 2: Convert to fraction form
    209,043.18/288,599.28 = 137,630.82/x
  3. Step 3: Cross multiply
    209,043.18x = 288,599.28 × 137,630.82
  4. Step 4: Simplify right side
    209,043.18x = 39,720,155,557.81
  5. Step 5: Solve for x
    x = 39,720,155,557.81/209,043.18
  6. Step 6: Final answer
    x = 190,009.33

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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.