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Finding the Fourth Proportional to 445,587.53, 668,420.72 and 125,742.22

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Solution

The fourth proportional to 445,587.53, 668,420.72 and 125,742.22 is: 188,624.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,587.53 : 668,420.72 = 125,742.22 : x
  2. Step 2: Convert to fraction form
    445,587.53/668,420.72 = 125,742.22/x
  3. Step 3: Cross multiply
    445,587.53x = 668,420.72 × 125,742.22
  4. Step 4: Simplify right side
    445,587.53x = 84,048,703,870.10
  5. Step 5: Solve for x
    x = 84,048,703,870.10/445,587.53
  6. Step 6: Final answer
    x = 188,624.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.