Home / 389,426.20-537,396.54-217,349.08

Finding the Fourth Proportional to 389,426.20, 537,396.54 and 217,349.08

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Solution

The fourth proportional to 389,426.20, 537,396.54 and 217,349.08 is: 299,935.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,426.20 : 537,396.54 = 217,349.08 : x
  2. Step 2: Convert to fraction form
    389,426.20/537,396.54 = 217,349.08/x
  3. Step 3: Cross multiply
    389,426.20x = 537,396.54 × 217,349.08
  4. Step 4: Simplify right side
    389,426.20x = 116,802,643,564.18
  5. Step 5: Solve for x
    x = 116,802,643,564.18/389,426.20
  6. Step 6: Final answer
    x = 299,935.25

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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.