Home / 280,693.34-387,352.26-153,366.20

Finding the Fourth Proportional to 280,693.34, 387,352.26 and 153,366.20

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Solution

The fourth proportional to 280,693.34, 387,352.26 and 153,366.20 is: 211,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,693.34 : 387,352.26 = 153,366.20 : x
  2. Step 2: Convert to fraction form
    280,693.34/387,352.26 = 153,366.20/x
  3. Step 3: Cross multiply
    280,693.34x = 387,352.26 × 153,366.20
  4. Step 4: Simplify right side
    280,693.34x = 59,406,742,240.85
  5. Step 5: Solve for x
    x = 59,406,742,240.85/280,693.34
  6. Step 6: Final answer
    x = 211,642.87

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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.