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Finding the Fourth Proportional to 217,547.35, 300,210.67 and 120,745.55

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Solution

The fourth proportional to 217,547.35, 300,210.67 and 120,745.55 is: 166,626.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,547.35 : 300,210.67 = 120,745.55 : x
  2. Step 2: Convert to fraction form
    217,547.35/300,210.67 = 120,745.55/x
  3. Step 3: Cross multiply
    217,547.35x = 300,210.67 × 120,745.55
  4. Step 4: Simplify right side
    217,547.35x = 36,249,102,465.02
  5. Step 5: Solve for x
    x = 36,249,102,465.02/217,547.35
  6. Step 6: Final answer
    x = 166,626.27

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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.