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Finding the Fourth Proportional to 389,626.63, 537,679.48 and 217,547.24

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Solution

The fourth proportional to 389,626.63, 537,679.48 and 217,547.24 is: 300,212.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,626.63 : 537,679.48 = 217,547.24 : x
  2. Step 2: Convert to fraction form
    389,626.63/537,679.48 = 217,547.24/x
  3. Step 3: Cross multiply
    389,626.63x = 537,679.48 × 217,547.24
  4. Step 4: Simplify right side
    389,626.63x = 116,970,686,878.64
  5. Step 5: Solve for x
    x = 116,970,686,878.64/389,626.63
  6. Step 6: Final answer
    x = 300,212.25

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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.