Home / 288,569.80-398,219.38-157,741.64

Finding the Fourth Proportional to 288,569.80, 398,219.38 and 157,741.64

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Solution

The fourth proportional to 288,569.80, 398,219.38 and 157,741.64 is: 217,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,569.80 : 398,219.38 = 157,741.64 : x
  2. Step 2: Convert to fraction form
    288,569.80/398,219.38 = 157,741.64/x
  3. Step 3: Cross multiply
    288,569.80x = 398,219.38 × 157,741.64
  4. Step 4: Simplify right side
    288,569.80x = 62,815,778,080.98
  5. Step 5: Solve for x
    x = 62,815,778,080.98/288,569.80
  6. Step 6: Final answer
    x = 217,679.67

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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.